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https://github.com/scylladb/scylladb.git
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036974e19b
Schema is tracked in memtable and cache per-entry. Entries are upgraded lazily on access. Incoming mutations are upgraded to table's current schema on given shard. Mutating nodes need to keep schema_ptr alive in case schema version is requested by target node.
1256 lines
42 KiB
C++
1256 lines
42 KiB
C++
/*
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* Copyright (C) 2014 Cloudius Systems, Ltd.
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <boost/range/adaptor/reversed.hpp>
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#include "mutation_partition.hh"
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#include "mutation_partition_applier.hh"
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#include "converting_mutation_partition_applier.hh"
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#include "partition_builder.hh"
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template<bool reversed>
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struct reversal_traits;
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template<>
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struct reversal_traits<false> {
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template <typename Container>
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static auto begin(Container& c) {
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return c.begin();
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}
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template <typename Container>
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static auto end(Container& c) {
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return c.end();
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}
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template <typename Container, typename Disposer>
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static typename Container::iterator erase_and_dispose(Container& c,
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typename Container::iterator begin,
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typename Container::iterator end,
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Disposer disposer)
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{
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return c.erase_and_dispose(begin, end, std::move(disposer));
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}
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template <typename Container>
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static boost::iterator_range<typename Container::iterator> maybe_reverse(
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Container& c, boost::iterator_range<typename Container::iterator> r)
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{
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return r;
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}
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};
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template<>
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struct reversal_traits<true> {
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template <typename Container>
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static auto begin(Container& c) {
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return c.rbegin();
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}
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template <typename Container>
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static auto end(Container& c) {
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return c.rend();
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}
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template <typename Container, typename Disposer>
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static typename Container::reverse_iterator erase_and_dispose(Container& c,
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typename Container::reverse_iterator begin,
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typename Container::reverse_iterator end,
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Disposer disposer)
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{
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return typename Container::reverse_iterator(
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c.erase_and_dispose(end.base(), begin.base(), disposer)
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);
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}
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template <typename Container>
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static boost::iterator_range<typename Container::reverse_iterator> maybe_reverse(
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Container& c, boost::iterator_range<typename Container::iterator> r)
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{
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using reverse_iterator = typename Container::reverse_iterator;
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return boost::make_iterator_range(reverse_iterator(r.end()), reverse_iterator(r.begin()));
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}
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};
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mutation_partition::mutation_partition(const mutation_partition& x)
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: _tombstone(x._tombstone)
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, _static_row(x._static_row)
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, _rows(x._rows.value_comp())
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, _row_tombstones(x._row_tombstones.value_comp()) {
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auto cloner = [] (const auto& x) {
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return current_allocator().construct<std::remove_const_t<std::remove_reference_t<decltype(x)>>>(x);
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};
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_rows.clone_from(x._rows, cloner, current_deleter<rows_entry>());
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try {
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_row_tombstones.clone_from(x._row_tombstones, cloner, current_deleter<row_tombstones_entry>());
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} catch (...) {
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_rows.clear_and_dispose(current_deleter<rows_entry>());
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throw;
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}
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}
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mutation_partition::~mutation_partition() {
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_rows.clear_and_dispose(current_deleter<rows_entry>());
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_row_tombstones.clear_and_dispose(current_deleter<row_tombstones_entry>());
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}
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mutation_partition&
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mutation_partition::operator=(const mutation_partition& x) {
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mutation_partition n(x);
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std::swap(*this, n);
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return *this;
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}
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mutation_partition&
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mutation_partition::operator=(mutation_partition&& x) noexcept {
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if (this != &x) {
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this->~mutation_partition();
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new (this) mutation_partition(std::move(x));
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}
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return *this;
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}
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void
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mutation_partition::apply(const schema& s, const mutation_partition& p, const schema& p_schema) {
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if (s.version() != p_schema.version()) {
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auto p2 = p;
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p2.upgrade(p_schema, s);
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apply(s, std::move(p2), s);
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return;
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}
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_tombstone.apply(p._tombstone);
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for (auto&& e : p._row_tombstones) {
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apply_row_tombstone(s, e.prefix(), e.t());
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}
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_static_row.merge(s, column_kind::static_column, p._static_row);
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for (auto&& entry : p._rows) {
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auto i = _rows.find(entry);
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if (i == _rows.end()) {
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auto e = current_allocator().construct<rows_entry>(entry);
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_rows.insert(i, *e);
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} else {
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i->row().apply(entry.row().deleted_at());
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i->row().apply(entry.row().marker());
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i->row().cells().merge(s, column_kind::regular_column, entry.row().cells());
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}
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}
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}
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void
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mutation_partition::apply(const schema& s, mutation_partition&& p, const schema& p_schema) {
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if (s.version() != p_schema.version()) {
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// We can't upgrade p in-place due to exception guarantees
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apply(s, p, p_schema);
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return;
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}
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_tombstone.apply(p._tombstone);
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p._row_tombstones.clear_and_dispose([this, &s] (row_tombstones_entry* e) {
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apply_row_tombstone(s, e);
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});
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_static_row.merge(s, column_kind::static_column, std::move(p._static_row));
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auto p_i = p._rows.begin();
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auto p_end = p._rows.end();
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while (p_i != p_end) {
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rows_entry& entry = *p_i;
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auto i = _rows.find(entry);
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if (i == _rows.end()) {
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p_i = p._rows.erase(p_i);
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_rows.insert(i, entry);
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} else {
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i->row().apply(entry.row().deleted_at());
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i->row().apply(entry.row().marker());
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i->row().cells().merge(s, column_kind::regular_column, std::move(entry.row().cells()));
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p_i = p._rows.erase_and_dispose(p_i, current_deleter<rows_entry>());
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}
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}
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}
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void
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mutation_partition::apply(const schema& s, mutation_partition_view p, const schema& p_schema) {
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if (p_schema.version() == s.version()) {
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mutation_partition_applier applier(s, *this);
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p.accept(s, applier);
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} else {
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mutation_partition p2(*this, copy_comparators_only{});
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partition_builder b(p_schema, p2);
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p.accept(p_schema, b);
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p2.upgrade(p_schema, s);
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apply(s, std::move(p2), s);
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}
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}
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tombstone
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mutation_partition::range_tombstone_for_row(const schema& schema, const clustering_key& key) const {
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tombstone t = _tombstone;
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if (_row_tombstones.empty()) {
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return t;
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}
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auto c = row_tombstones_entry::key_comparator(
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clustering_key_prefix::prefix_view_type::less_compare_with_prefix(schema));
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// _row_tombstones contains only strict prefixes
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unsigned key_length = std::distance(key.begin(schema), key.end(schema));
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assert(key_length <= schema.clustering_key_size());
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for (unsigned prefix_len = 1; prefix_len <= key_length; ++prefix_len) {
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auto i = _row_tombstones.find(key.prefix_view(schema, prefix_len), c);
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if (i != _row_tombstones.end()) {
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t.apply(i->t());
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}
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}
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return t;
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}
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tombstone
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mutation_partition::tombstone_for_row(const schema& schema, const clustering_key& key) const {
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tombstone t = range_tombstone_for_row(schema, key);
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auto j = _rows.find(key, rows_entry::compare(schema));
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if (j != _rows.end()) {
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t.apply(j->row().deleted_at());
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}
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return t;
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}
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tombstone
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mutation_partition::tombstone_for_row(const schema& schema, const rows_entry& e) const {
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tombstone t = range_tombstone_for_row(schema, e.key());
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t.apply(e.row().deleted_at());
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return t;
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}
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void
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mutation_partition::apply_row_tombstone(const schema& schema, clustering_key_prefix prefix, tombstone t) {
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assert(!prefix.is_full(schema));
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auto i = _row_tombstones.lower_bound(prefix, row_tombstones_entry::compare(schema));
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if (i == _row_tombstones.end() || !prefix.equal(schema, i->prefix())) {
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auto e = current_allocator().construct<row_tombstones_entry>(std::move(prefix), t);
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_row_tombstones.insert(i, *e);
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} else {
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i->apply(t);
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}
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}
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void
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mutation_partition::apply_row_tombstone(const schema& s, row_tombstones_entry* e) noexcept {
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auto i = _row_tombstones.lower_bound(*e);
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if (i == _row_tombstones.end() || !e->prefix().equal(s, i->prefix())) {
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_row_tombstones.insert(i, *e);
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} else {
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i->apply(e->t());
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current_allocator().destroy(e);
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}
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}
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void
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mutation_partition::apply_delete(const schema& schema, const exploded_clustering_prefix& prefix, tombstone t) {
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if (!prefix) {
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apply(t);
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} else if (prefix.is_full(schema)) {
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apply_delete(schema, clustering_key::from_clustering_prefix(schema, prefix), t);
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} else {
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apply_row_tombstone(schema, clustering_key_prefix::from_clustering_prefix(schema, prefix), t);
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}
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}
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void
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mutation_partition::apply_delete(const schema& schema, clustering_key&& key, tombstone t) {
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clustered_row(schema, std::move(key)).apply(t);
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}
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void
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mutation_partition::apply_delete(const schema& schema, clustering_key_view key, tombstone t) {
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clustered_row(schema, key).apply(t);
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}
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void
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mutation_partition::apply_insert(const schema& s, clustering_key_view key, api::timestamp_type created_at) {
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clustered_row(s, key).apply(created_at);
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}
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void mutation_partition::insert_row(const schema& s, const clustering_key& key, deletable_row&& row) {
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auto e = current_allocator().construct<rows_entry>(key, std::move(row));
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_rows.insert(_rows.end(), *e);
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}
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void mutation_partition::insert_row(const schema& s, const clustering_key& key, const deletable_row& row) {
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auto e = current_allocator().construct<rows_entry>(key, row);
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_rows.insert(_rows.end(), *e);
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}
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const row*
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mutation_partition::find_row(const clustering_key& key) const {
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auto i = _rows.find(key);
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if (i == _rows.end()) {
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return nullptr;
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}
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return &i->row().cells();
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}
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deletable_row&
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mutation_partition::clustered_row(clustering_key&& key) {
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auto i = _rows.find(key);
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if (i == _rows.end()) {
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auto e = current_allocator().construct<rows_entry>(std::move(key));
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_rows.insert(i, *e);
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return e->row();
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}
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return i->row();
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}
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deletable_row&
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mutation_partition::clustered_row(const clustering_key& key) {
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auto i = _rows.find(key);
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if (i == _rows.end()) {
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auto e = current_allocator().construct<rows_entry>(key);
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_rows.insert(i, *e);
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return e->row();
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}
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return i->row();
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}
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deletable_row&
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mutation_partition::clustered_row(const schema& s, const clustering_key_view& key) {
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auto i = _rows.find(key, rows_entry::compare(s));
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if (i == _rows.end()) {
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auto e = current_allocator().construct<rows_entry>(key);
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_rows.insert(i, *e);
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return e->row();
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}
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return i->row();
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}
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boost::iterator_range<mutation_partition::rows_type::const_iterator>
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mutation_partition::range(const schema& schema, const query::range<clustering_key_prefix>& r) const {
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auto cmp = rows_entry::key_comparator(clustering_key_prefix::prefix_equality_less_compare(schema));
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auto i1 = r.start() ? (r.start()->is_inclusive()
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? _rows.lower_bound(r.start()->value(), cmp)
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: _rows.upper_bound(r.start()->value(), cmp)) : _rows.cbegin();
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auto i2 = r.end() ? (r.end()->is_inclusive()
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? _rows.upper_bound(r.end()->value(), cmp)
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: _rows.lower_bound(r.end()->value(), cmp)) : _rows.cend();
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return boost::make_iterator_range(i1, i2);
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}
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template <typename Container>
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boost::iterator_range<typename Container::iterator>
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unconst(Container& c, boost::iterator_range<typename Container::const_iterator> r) {
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return boost::make_iterator_range(
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c.erase(r.begin(), r.begin()),
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c.erase(r.end(), r.end())
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);
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}
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boost::iterator_range<mutation_partition::rows_type::iterator>
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mutation_partition::range(const schema& schema, const query::range<clustering_key_prefix>& r) {
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return unconst(_rows, static_cast<const mutation_partition*>(this)->range(schema, r));
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}
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template<typename Func>
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void mutation_partition::for_each_row(const schema& schema, const query::range<clustering_key_prefix>& row_range, bool reversed, Func&& func) const
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{
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auto r = range(schema, row_range);
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if (!reversed) {
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for (const auto& e : r) {
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if (func(e) == stop_iteration::yes) {
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break;
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}
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}
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} else {
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for (const auto& e : r | boost::adaptors::reversed) {
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if (func(e) == stop_iteration::yes) {
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break;
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}
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}
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}
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}
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static void get_row_slice(const schema& s,
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column_kind kind,
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const row& cells,
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const std::vector<column_id>& columns,
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tombstone tomb,
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gc_clock::time_point now,
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query::result::row_writer& writer)
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{
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for (auto id : columns) {
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const atomic_cell_or_collection* cell = cells.find_cell(id);
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if (!cell) {
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writer.add_empty();
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} else {
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auto&& def = s.column_at(kind, id);
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if (def.is_atomic()) {
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auto c = cell->as_atomic_cell();
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if (!c.is_live(tomb, now)) {
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writer.add_empty();
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} else {
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writer.add(cell->as_atomic_cell());
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}
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} else {
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auto&& mut = cell->as_collection_mutation();
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auto&& ctype = static_pointer_cast<const collection_type_impl>(def.type);
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auto m_view = ctype->deserialize_mutation_form(mut);
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m_view.tomb.apply(tomb);
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auto m_ser = ctype->serialize_mutation_form_only_live(m_view, now);
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if (ctype->is_empty(m_ser)) {
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writer.add_empty();
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} else {
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writer.add(m_ser);
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}
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}
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}
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}
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}
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bool has_any_live_data(const schema& s, column_kind kind, const row& cells, tombstone tomb, gc_clock::time_point now) {
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bool any_live = false;
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cells.for_each_cell_until([&] (column_id id, const atomic_cell_or_collection& cell_or_collection) {
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const column_definition& def = s.column_at(kind, id);
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if (def.is_atomic()) {
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auto&& c = cell_or_collection.as_atomic_cell();
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if (c.is_live(tomb, now)) {
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any_live = true;
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return stop_iteration::yes;
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}
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} else {
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auto&& cell = cell_or_collection.as_collection_mutation();
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auto&& ctype = static_pointer_cast<const collection_type_impl>(def.type);
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if (ctype->is_any_live(cell, tomb, now)) {
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any_live = true;
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return stop_iteration::yes;
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}
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}
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return stop_iteration::no;
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});
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return any_live;
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}
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void
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mutation_partition::query(query::result::partition_writer& pw,
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const schema& s,
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gc_clock::time_point now,
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uint32_t limit) const
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{
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const query::partition_slice& slice = pw.slice();
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// To avoid retraction of the partition entry in case of limit == 0.
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assert(limit > 0);
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if (!slice.static_columns.empty()) {
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auto row_builder = pw.add_static_row();
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get_row_slice(s, column_kind::static_column, static_row(), slice.static_columns, partition_tombstone(), now, row_builder);
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row_builder.finish();
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}
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// Like PK range, an empty row range, should be considered an "exclude all" restriction
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bool has_ck_selector = pw.ranges().empty();
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auto is_reversed = slice.options.contains(query::partition_slice::option::reversed);
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for (auto&& row_range : pw.ranges()) {
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if (limit == 0) {
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break;
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}
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|
|
has_ck_selector |= !row_range.is_full();
|
|
|
|
// FIXME: Optimize for a full-tuple singular range. mutation_partition::range()
|
|
// does two lookups to form a range, even for singular range. We need
|
|
// only one lookup for a full-tuple singular range though.
|
|
for_each_row(s, row_range, is_reversed, [&] (const rows_entry& e) {
|
|
auto& row = e.row();
|
|
auto row_tombstone = tombstone_for_row(s, e);
|
|
|
|
if (row.is_live(s, row_tombstone, now)) {
|
|
auto row_builder = pw.add_row(e.key());
|
|
get_row_slice(s, column_kind::regular_column, row.cells(), slice.regular_columns, row_tombstone, now, row_builder);
|
|
row_builder.finish();
|
|
if (--limit == 0) {
|
|
return stop_iteration::yes;
|
|
}
|
|
}
|
|
return stop_iteration::no;
|
|
});
|
|
}
|
|
|
|
// If we got no rows, but have live static columns, we should only
|
|
// give them back IFF we did not have any CK restrictions.
|
|
// #589
|
|
// If ck:s exist, and we do a restriction on them, we either have maching
|
|
// rows, or return nothing, since cql does not allow "is null".
|
|
if (pw.row_count() == 0
|
|
&& (has_ck_selector
|
|
|| !has_any_live_data(s, column_kind::static_column,
|
|
static_row(), _tombstone, now))) {
|
|
pw.retract();
|
|
} else {
|
|
pw.finish();
|
|
}
|
|
}
|
|
|
|
std::ostream&
|
|
operator<<(std::ostream& os, const std::pair<column_id, const atomic_cell_or_collection&>& c) {
|
|
return fprint(os, "{column: %s %s}", c.first, c.second);
|
|
}
|
|
|
|
std::ostream&
|
|
operator<<(std::ostream& os, const row& r) {
|
|
sstring cells;
|
|
switch (r._type) {
|
|
case row::storage_type::set:
|
|
cells = ::join(", ", r.get_range_set());
|
|
break;
|
|
case row::storage_type::vector:
|
|
cells = ::join(", ", r.get_range_vector());
|
|
break;
|
|
}
|
|
return fprint(os, "{row: %s}", cells);
|
|
}
|
|
|
|
std::ostream&
|
|
operator<<(std::ostream& os, const row_marker& rm) {
|
|
if (rm.is_missing()) {
|
|
return fprint(os, "{missing row_marker}");
|
|
} else if (rm._ttl == row_marker::dead) {
|
|
return fprint(os, "{dead row_marker %s %s}", rm._timestamp, rm._expiry.time_since_epoch().count());
|
|
} else {
|
|
return fprint(os, "{row_marker %s %s %s}", rm._timestamp, rm._ttl.count(),
|
|
rm._ttl != row_marker::no_ttl ? rm._expiry.time_since_epoch().count() : 0);
|
|
}
|
|
}
|
|
|
|
std::ostream&
|
|
operator<<(std::ostream& os, const deletable_row& dr) {
|
|
return fprint(os, "{deletable_row: %s %s %s}", dr._marker, dr._deleted_at, dr._cells);
|
|
}
|
|
|
|
std::ostream&
|
|
operator<<(std::ostream& os, const rows_entry& re) {
|
|
return fprint(os, "{rows_entry: %s %s}", re._key, re._row);
|
|
}
|
|
|
|
std::ostream&
|
|
operator<<(std::ostream& os, const row_tombstones_entry& rte) {
|
|
return fprint(os, "{row_tombstone_entry: %s %s}", rte._prefix, rte._t);
|
|
}
|
|
|
|
std::ostream&
|
|
operator<<(std::ostream& os, const mutation_partition& mp) {
|
|
return fprint(os, "{mutation_partition: %s (%s) static %s clustered %s}",
|
|
mp._tombstone, ::join(", ", mp._row_tombstones), mp._static_row,
|
|
::join(", ", mp._rows));
|
|
}
|
|
|
|
constexpr gc_clock::duration row_marker::no_ttl;
|
|
constexpr gc_clock::duration row_marker::dead;
|
|
|
|
int compare_row_marker_for_merge(const row_marker& left, const row_marker& right) {
|
|
if (left.timestamp() != right.timestamp()) {
|
|
return left.timestamp() > right.timestamp() ? 1 : -1;
|
|
}
|
|
if (left.is_live() != right.is_live()) {
|
|
return left.is_live() ? -1 : 1;
|
|
}
|
|
if (left.is_live()) {
|
|
if (left.is_expiring()
|
|
&& right.is_expiring()
|
|
&& left.expiry() != right.expiry())
|
|
{
|
|
return left.expiry() < right.expiry() ? -1 : 1;
|
|
}
|
|
} else {
|
|
// Both are deleted
|
|
if (left.deletion_time() != right.deletion_time()) {
|
|
// Origin compares big-endian serialized deletion time. That's because it
|
|
// delegates to AbstractCell.reconcile() which compares values after
|
|
// comparing timestamps, which in case of deleted cells will hold
|
|
// serialized expiry.
|
|
return (uint32_t) left.deletion_time().time_since_epoch().count()
|
|
< (uint32_t) right.deletion_time().time_since_epoch().count() ? -1 : 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
deletable_row::equal(column_kind kind, const schema& s, const deletable_row& other, const schema& other_schema) const {
|
|
if (_deleted_at != other._deleted_at || _marker != other._marker) {
|
|
return false;
|
|
}
|
|
return _cells.equal(kind, s, other._cells, other_schema);
|
|
}
|
|
|
|
bool
|
|
rows_entry::equal(const schema& s, const rows_entry& other) const {
|
|
return equal(s, other, s);
|
|
}
|
|
|
|
bool
|
|
rows_entry::equal(const schema& s, const rows_entry& other, const schema& other_schema) const {
|
|
return key().equal(s, other.key()) // Only representation-compatible changes are allowed
|
|
&& row().equal(column_kind::regular_column, s, other.row(), other_schema);
|
|
}
|
|
|
|
bool
|
|
row_tombstones_entry::equal(const schema& s, const row_tombstones_entry& other) const {
|
|
return prefix().equal(s, other.prefix()) && t() == other.t();
|
|
}
|
|
|
|
bool mutation_partition::equal(const schema& s, const mutation_partition& p) const {
|
|
return equal(s, p, s);
|
|
}
|
|
|
|
bool mutation_partition::equal(const schema& this_schema, const mutation_partition& p, const schema& p_schema) const {
|
|
if (_tombstone != p._tombstone) {
|
|
return false;
|
|
}
|
|
|
|
if (!std::equal(_rows.begin(), _rows.end(), p._rows.begin(), p._rows.end(),
|
|
[&] (const rows_entry& e1, const rows_entry& e2) {
|
|
return e1.equal(this_schema, e2, p_schema);
|
|
}
|
|
)) {
|
|
return false;
|
|
}
|
|
|
|
if (!std::equal(_row_tombstones.begin(), _row_tombstones.end(),
|
|
p._row_tombstones.begin(), p._row_tombstones.end(),
|
|
[&] (const row_tombstones_entry& e1, const row_tombstones_entry& e2) { return e1.equal(this_schema, e2); }
|
|
)) {
|
|
return false;
|
|
}
|
|
|
|
return _static_row.equal(column_kind::static_column, this_schema, p._static_row, p_schema);
|
|
}
|
|
|
|
void
|
|
merge_column(const column_definition& def,
|
|
atomic_cell_or_collection& old,
|
|
atomic_cell_or_collection&& neww) {
|
|
old.linearize();
|
|
neww.linearize();
|
|
if (def.is_atomic()) {
|
|
if (compare_atomic_cell_for_merge(old.as_atomic_cell(), neww.as_atomic_cell()) < 0) {
|
|
old = std::move(neww);
|
|
}
|
|
} else {
|
|
auto ct = static_pointer_cast<const collection_type_impl>(def.type);
|
|
old = ct->merge(old.as_collection_mutation(), neww.as_collection_mutation());
|
|
}
|
|
old.unlinearize();
|
|
}
|
|
|
|
void
|
|
row::apply(const column_definition& column, const atomic_cell_or_collection& value) {
|
|
// FIXME: Optimize
|
|
atomic_cell_or_collection tmp(value);
|
|
apply(column, std::move(tmp));
|
|
}
|
|
|
|
void
|
|
row::apply(const column_definition& column, atomic_cell_or_collection&& value) {
|
|
// our mutations are not yet immutable
|
|
auto id = column.id;
|
|
if (_type == storage_type::vector && id < max_vector_size) {
|
|
if (id >= _storage.vector.size()) {
|
|
_storage.vector.resize(id);
|
|
_storage.vector.emplace_back(std::move(value));
|
|
_size++;
|
|
} else if (!bool(_storage.vector[id])) {
|
|
_storage.vector[id] = std::move(value);
|
|
_size++;
|
|
} else {
|
|
merge_column(column, _storage.vector[id], std::move(value));
|
|
}
|
|
} else {
|
|
if (_type == storage_type::vector) {
|
|
vector_to_set();
|
|
}
|
|
auto i = _storage.set.lower_bound(id, cell_entry::compare());
|
|
if (i == _storage.set.end() || i->id() != id) {
|
|
auto e = current_allocator().construct<cell_entry>(id, std::move(value));
|
|
_storage.set.insert(i, *e);
|
|
_size++;
|
|
} else {
|
|
merge_column(column, i->cell(), std::move(value));
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
row::append_cell(column_id id, atomic_cell_or_collection value) {
|
|
if (_type == storage_type::vector && id < max_vector_size) {
|
|
_storage.vector.resize(id);
|
|
_storage.vector.emplace_back(std::move(value));
|
|
} else {
|
|
if (_type == storage_type::vector) {
|
|
vector_to_set();
|
|
}
|
|
auto e = current_allocator().construct<cell_entry>(id, std::move(value));
|
|
_storage.set.insert(_storage.set.end(), *e);
|
|
}
|
|
_size++;
|
|
}
|
|
|
|
const atomic_cell_or_collection*
|
|
row::find_cell(column_id id) const {
|
|
if (_type == storage_type::vector) {
|
|
if (id >= _storage.vector.size() || !bool(_storage.vector[id])) {
|
|
return nullptr;
|
|
}
|
|
return &_storage.vector[id];
|
|
} else {
|
|
auto i = _storage.set.find(id, cell_entry::compare());
|
|
if (i == _storage.set.end()) {
|
|
return nullptr;
|
|
}
|
|
return &i->cell();
|
|
}
|
|
}
|
|
|
|
template<bool reversed, typename Func>
|
|
void mutation_partition::trim_rows(const schema& s,
|
|
const std::vector<query::clustering_range>& row_ranges,
|
|
Func&& func)
|
|
{
|
|
static_assert(std::is_same<stop_iteration, std::result_of_t<Func(rows_entry&)>>::value, "Bad func signature");
|
|
|
|
bool stop = false;
|
|
auto last = reversal_traits<reversed>::begin(_rows);
|
|
auto deleter = current_deleter<rows_entry>();
|
|
|
|
for (auto&& row_range : row_ranges) {
|
|
if (stop) {
|
|
break;
|
|
}
|
|
|
|
auto it_range = reversal_traits<reversed>::maybe_reverse(_rows, range(s, row_range));
|
|
last = reversal_traits<reversed>::erase_and_dispose(_rows, last, it_range.begin(), deleter);
|
|
|
|
while (last != it_range.end()) {
|
|
rows_entry& e = *last;
|
|
if (func(e) == stop_iteration::yes) {
|
|
stop = true;
|
|
break;
|
|
}
|
|
|
|
if (e.empty()) {
|
|
last = reversal_traits<reversed>::erase_and_dispose(_rows, last, std::next(last, 1), deleter);
|
|
} else {
|
|
++last;
|
|
}
|
|
}
|
|
}
|
|
|
|
reversal_traits<reversed>::erase_and_dispose(_rows, last, reversal_traits<reversed>::end(_rows), deleter);
|
|
}
|
|
|
|
uint32_t mutation_partition::do_compact(const schema& s,
|
|
gc_clock::time_point query_time,
|
|
const std::vector<query::clustering_range>& row_ranges,
|
|
bool reverse,
|
|
uint32_t row_limit,
|
|
api::timestamp_type max_purgeable)
|
|
{
|
|
assert(row_limit > 0);
|
|
|
|
auto gc_before = query_time - s.gc_grace_seconds();
|
|
|
|
bool static_row_live = _static_row.compact_and_expire(s, column_kind::static_column, _tombstone,
|
|
query_time, max_purgeable, gc_before);
|
|
|
|
uint32_t row_count = 0;
|
|
|
|
auto can_purge_tombstone = [&] (const tombstone& t) {
|
|
return t.timestamp < max_purgeable && t.deletion_time < gc_before;
|
|
};
|
|
|
|
auto row_callback = [&] (rows_entry& e) {
|
|
deletable_row& row = e.row();
|
|
|
|
tombstone tomb = tombstone_for_row(s, e);
|
|
|
|
bool is_live = row.cells().compact_and_expire(s, column_kind::regular_column, tomb, query_time, max_purgeable, gc_before);
|
|
is_live |= row.marker().compact_and_expire(tomb, query_time, max_purgeable, gc_before);
|
|
|
|
if (can_purge_tombstone(row.deleted_at())) {
|
|
row.remove_tombstone();
|
|
}
|
|
|
|
// when row_limit is reached, do not exit immediately,
|
|
// iterate to the next live_row instead to include trailing
|
|
// tombstones in the mutation. This is how Origin deals with
|
|
// https://issues.apache.org/jira/browse/CASSANDRA-8933
|
|
if (is_live) {
|
|
if (row_count == row_limit) {
|
|
return stop_iteration::yes;
|
|
}
|
|
++row_count;
|
|
}
|
|
|
|
return stop_iteration::no;
|
|
};
|
|
|
|
if (reverse) {
|
|
trim_rows<true>(s, row_ranges, row_callback);
|
|
} else {
|
|
trim_rows<false>(s, row_ranges, row_callback);
|
|
}
|
|
|
|
// #589 - Do not add extra row for statics unless we did a CK range-less query.
|
|
// See comment in query
|
|
if (row_count == 0 && static_row_live
|
|
&& std::any_of(row_ranges.begin(), row_ranges.end(), [](auto& r) {
|
|
return r.is_full();
|
|
})) {
|
|
++row_count;
|
|
}
|
|
|
|
auto it = _row_tombstones.begin();
|
|
while (it != _row_tombstones.end()) {
|
|
auto& tomb = it->t();
|
|
if (can_purge_tombstone(tomb) || tomb.timestamp <= _tombstone.timestamp) {
|
|
it = _row_tombstones.erase_and_dispose(it, current_deleter<row_tombstones_entry>());
|
|
} else {
|
|
++it;
|
|
}
|
|
}
|
|
if (can_purge_tombstone(_tombstone)) {
|
|
_tombstone = tombstone();
|
|
}
|
|
|
|
// FIXME: purge unneeded prefix tombstones based on row_ranges
|
|
|
|
return row_count;
|
|
}
|
|
|
|
uint32_t
|
|
mutation_partition::compact_for_query(
|
|
const schema& s,
|
|
gc_clock::time_point query_time,
|
|
const std::vector<query::clustering_range>& row_ranges,
|
|
bool reverse,
|
|
uint32_t row_limit)
|
|
{
|
|
return do_compact(s, query_time, row_ranges, reverse, row_limit, api::max_timestamp);
|
|
}
|
|
|
|
void mutation_partition::compact_for_compaction(const schema& s,
|
|
api::timestamp_type max_purgeable, gc_clock::time_point compaction_time)
|
|
{
|
|
static const std::vector<query::clustering_range> all_rows = {
|
|
query::clustering_range::make_open_ended_both_sides()
|
|
};
|
|
|
|
do_compact(s, compaction_time, all_rows, false, query::max_rows, max_purgeable);
|
|
}
|
|
|
|
// Returns true if there is no live data or tombstones.
|
|
bool mutation_partition::empty() const
|
|
{
|
|
if (_tombstone.timestamp != api::missing_timestamp) {
|
|
return false;
|
|
}
|
|
return !_static_row.size() && _rows.empty() && _row_tombstones.empty();
|
|
}
|
|
|
|
bool
|
|
deletable_row::is_live(const schema& s, tombstone base_tombstone, gc_clock::time_point query_time = gc_clock::time_point::min()) const {
|
|
// _created_at corresponds to the row marker cell, present for rows
|
|
// created with the 'insert' statement. If row marker is live, we know the
|
|
// row is live. Otherwise, a row is considered live if it has any cell
|
|
// which is live.
|
|
base_tombstone.apply(_deleted_at);
|
|
return _marker.is_live(base_tombstone, query_time)
|
|
|| has_any_live_data(s, column_kind::regular_column, _cells, base_tombstone, query_time);
|
|
}
|
|
|
|
bool
|
|
mutation_partition::is_static_row_live(const schema& s, gc_clock::time_point query_time) const {
|
|
return has_any_live_data(s, column_kind::static_column, static_row(), _tombstone, query_time);
|
|
}
|
|
|
|
size_t
|
|
mutation_partition::live_row_count(const schema& s, gc_clock::time_point query_time) const {
|
|
size_t count = 0;
|
|
|
|
for (const rows_entry& e : _rows) {
|
|
tombstone base_tombstone = range_tombstone_for_row(s, e.key());
|
|
if (e.row().is_live(s, base_tombstone, query_time)) {
|
|
++count;
|
|
}
|
|
}
|
|
|
|
if (count == 0 && is_static_row_live(s, query_time)) {
|
|
return 1;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
rows_entry::rows_entry(rows_entry&& o) noexcept
|
|
: _key(std::move(o._key))
|
|
, _row(std::move(o._row))
|
|
{
|
|
using container_type = mutation_partition::rows_type;
|
|
container_type::node_algorithms::replace_node(o._link.this_ptr(), _link.this_ptr());
|
|
container_type::node_algorithms::init(o._link.this_ptr());
|
|
}
|
|
|
|
row_tombstones_entry::row_tombstones_entry(row_tombstones_entry&& o) noexcept
|
|
: _link()
|
|
, _prefix(std::move(o._prefix))
|
|
, _t(std::move(o._t))
|
|
{
|
|
using container_type = mutation_partition::row_tombstones_type;
|
|
container_type::node_algorithms::replace_node(o._link.this_ptr(), _link.this_ptr());
|
|
container_type::node_algorithms::init(o._link.this_ptr());
|
|
}
|
|
|
|
row::row(const row& o)
|
|
: _type(o._type)
|
|
, _size(o._size)
|
|
{
|
|
if (_type == storage_type::vector) {
|
|
new (&_storage.vector) vector_type(o._storage.vector);
|
|
} else {
|
|
auto cloner = [] (const auto& x) {
|
|
return current_allocator().construct<std::remove_const_t<std::remove_reference_t<decltype(x)>>>(x);
|
|
};
|
|
new (&_storage.set) map_type;
|
|
try {
|
|
_storage.set.clone_from(o._storage.set, cloner, current_deleter<cell_entry>());
|
|
} catch (...) {
|
|
_storage.set.~map_type();
|
|
throw;
|
|
}
|
|
}
|
|
}
|
|
|
|
row::~row() {
|
|
if (_type == storage_type::vector) {
|
|
_storage.vector.~vector_type();
|
|
} else {
|
|
_storage.set.clear_and_dispose(current_deleter<cell_entry>());
|
|
_storage.set.~map_type();
|
|
}
|
|
}
|
|
|
|
row::cell_entry::cell_entry(const cell_entry& o) noexcept
|
|
: _id(o._id)
|
|
, _cell(o._cell)
|
|
{ }
|
|
|
|
row::cell_entry::cell_entry(cell_entry&& o) noexcept
|
|
: _link()
|
|
, _id(o._id)
|
|
, _cell(std::move(o._cell))
|
|
{
|
|
using container_type = row::map_type;
|
|
container_type::node_algorithms::replace_node(o._link.this_ptr(), _link.this_ptr());
|
|
container_type::node_algorithms::init(o._link.this_ptr());
|
|
}
|
|
|
|
const atomic_cell_or_collection& row::cell_at(column_id id) const {
|
|
auto&& cell = find_cell(id);
|
|
if (!cell) {
|
|
throw std::out_of_range(sprint("Column not found for id = %d", id));
|
|
}
|
|
return *cell;
|
|
}
|
|
|
|
void row::vector_to_set()
|
|
{
|
|
assert(_type == storage_type::vector);
|
|
map_type set;
|
|
for (unsigned i = 0; i < _storage.vector.size(); i++) {
|
|
auto& c = _storage.vector[i];
|
|
if (!bool(c)) {
|
|
continue;
|
|
}
|
|
auto e = current_allocator().construct<cell_entry>(i, std::move(c));
|
|
set.insert(set.end(), *e);
|
|
}
|
|
_storage.vector.~vector_type();
|
|
new (&_storage.set) map_type(std::move(set));
|
|
_type = storage_type::set;
|
|
}
|
|
|
|
void row::reserve(column_id last_column)
|
|
{
|
|
if (_type == storage_type::vector && last_column >= internal_count) {
|
|
if (last_column >= max_vector_size) {
|
|
vector_to_set();
|
|
} else {
|
|
_storage.vector.reserve(last_column);
|
|
}
|
|
}
|
|
}
|
|
|
|
template<typename Func>
|
|
auto row::with_both_ranges(const row& other, Func&& func) const {
|
|
if (_type == storage_type::vector) {
|
|
if (other._type == storage_type::vector) {
|
|
return func(get_range_vector(), other.get_range_vector());
|
|
} else {
|
|
return func(get_range_vector(), other.get_range_set());
|
|
}
|
|
} else {
|
|
if (other._type == storage_type::vector) {
|
|
return func(get_range_set(), other.get_range_vector());
|
|
} else {
|
|
return func(get_range_set(), other.get_range_set());
|
|
}
|
|
}
|
|
}
|
|
|
|
bool row::operator==(const row& other) const {
|
|
if (size() != other.size()) {
|
|
return false;
|
|
}
|
|
|
|
auto cells_equal = [] (std::pair<column_id, const atomic_cell_or_collection&> c1,
|
|
std::pair<column_id, const atomic_cell_or_collection&> c2) {
|
|
return c1.first == c2.first && c1.second == c2.second;
|
|
};
|
|
return with_both_ranges(other, [&] (auto r1, auto r2) {
|
|
return boost::equal(r1, r2, cells_equal);
|
|
});
|
|
}
|
|
|
|
bool row::equal(column_kind kind, const schema& this_schema, const row& other, const schema& other_schema) const {
|
|
if (size() != other.size()) {
|
|
return false;
|
|
}
|
|
|
|
auto cells_equal = [&] (std::pair<column_id, const atomic_cell_or_collection&> c1,
|
|
std::pair<column_id, const atomic_cell_or_collection&> c2) {
|
|
static_assert(schema::row_column_ids_are_ordered_by_name::value, "Relying on column ids being ordered by name");
|
|
return this_schema.column_at(kind, c1.first).name() == other_schema.column_at(kind, c2.first).name()
|
|
&& c1.second == c2.second;
|
|
};
|
|
return with_both_ranges(other, [&] (auto r1, auto r2) {
|
|
return boost::equal(r1, r2, cells_equal);
|
|
});
|
|
}
|
|
|
|
row::row() {
|
|
new (&_storage.vector) vector_type;
|
|
}
|
|
|
|
row::row(row&& other)
|
|
: _type(other._type), _size(other._size) {
|
|
if (_type == storage_type::vector) {
|
|
new (&_storage.vector) vector_type(std::move(other._storage.vector));
|
|
} else {
|
|
new (&_storage.set) map_type(std::move(other._storage.set));
|
|
}
|
|
}
|
|
|
|
row& row::operator=(row&& other) {
|
|
if (this != &other) {
|
|
this->~row();
|
|
new (this) row(std::move(other));
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
void row::merge(const schema& s, column_kind kind, const row& other) {
|
|
if (other._type == storage_type::vector) {
|
|
reserve(other._storage.vector.size() - 1);
|
|
} else {
|
|
reserve(other._storage.set.rbegin()->id());
|
|
}
|
|
other.for_each_cell([&] (column_id id, const atomic_cell_or_collection& cell) {
|
|
apply(s.column_at(kind, id), cell);
|
|
});
|
|
}
|
|
|
|
void row::merge(const schema& s, column_kind kind, row&& other) {
|
|
if (other._type == storage_type::vector) {
|
|
reserve(other._storage.vector.size() - 1);
|
|
} else {
|
|
reserve(other._storage.set.rbegin()->id());
|
|
}
|
|
// FIXME: Optimize when 'other' is a set. We could move whole entries, not only cells.
|
|
other.for_each_cell_until([&] (column_id id, atomic_cell_or_collection& cell) {
|
|
apply(s.column_at(kind, id), std::move(cell));
|
|
return stop_iteration::no;
|
|
});
|
|
}
|
|
|
|
bool row::compact_and_expire(const schema& s, column_kind kind, tombstone tomb, gc_clock::time_point query_time,
|
|
api::timestamp_type max_purgeable, gc_clock::time_point gc_before)
|
|
{
|
|
bool any_live = false;
|
|
remove_if([&] (column_id id, atomic_cell_or_collection& c) {
|
|
bool erase = false;
|
|
const column_definition& def = s.column_at(kind, id);
|
|
if (def.is_atomic()) {
|
|
atomic_cell_view cell = c.as_atomic_cell();
|
|
if (cell.is_covered_by(tomb)) {
|
|
erase = true;
|
|
} else if (cell.has_expired(query_time)) {
|
|
c = atomic_cell::make_dead(cell.timestamp(), cell.deletion_time());
|
|
} else if (!cell.is_live()) {
|
|
erase = cell.timestamp() < max_purgeable && cell.deletion_time() < gc_before;
|
|
} else {
|
|
any_live |= true;
|
|
}
|
|
} else {
|
|
auto&& cell = c.as_collection_mutation();
|
|
auto&& ctype = static_pointer_cast<const collection_type_impl>(def.type);
|
|
auto m_view = ctype->deserialize_mutation_form(cell);
|
|
collection_type_impl::mutation m = m_view.materialize();
|
|
any_live |= m.compact_and_expire(tomb, query_time, max_purgeable, gc_before);
|
|
if (m.cells.empty() && m.tomb <= tomb) {
|
|
erase = true;
|
|
} else {
|
|
c = ctype->serialize_mutation_form(m);
|
|
}
|
|
}
|
|
return erase;
|
|
});
|
|
return any_live;
|
|
}
|
|
|
|
deletable_row deletable_row::difference(const schema& s, column_kind kind, const deletable_row& other) const
|
|
{
|
|
deletable_row dr;
|
|
if (_deleted_at > other._deleted_at) {
|
|
dr.apply(_deleted_at);
|
|
}
|
|
if (compare_row_marker_for_merge(_marker, other._marker) > 0) {
|
|
dr.apply(_marker);
|
|
}
|
|
dr._cells = _cells.difference(s, kind, other._cells);
|
|
return dr;
|
|
}
|
|
|
|
row row::difference(const schema& s, column_kind kind, const row& other) const
|
|
{
|
|
row r;
|
|
with_both_ranges(other, [&] (auto this_range, auto other_range) {
|
|
auto it = other_range.begin();
|
|
for (auto&& c : this_range) {
|
|
while (it != other_range.end() && it->first < c.first) {
|
|
++it;
|
|
}
|
|
if (it == other_range.end() || it->first != c.first) {
|
|
r.append_cell(c.first, c.second);
|
|
} else if (s.column_at(kind, c.first).is_atomic()) {
|
|
if (compare_atomic_cell_for_merge(c.second.as_atomic_cell(), it->second.as_atomic_cell()) > 0) {
|
|
r.append_cell(c.first, c.second);
|
|
}
|
|
} else {
|
|
auto ct = static_pointer_cast<const collection_type_impl>(s.column_at(kind, c.first).type);
|
|
auto diff = ct->difference(c.second.as_collection_mutation(), it->second.as_collection_mutation());
|
|
if (!ct->is_empty(diff)) {
|
|
r.append_cell(c.first, std::move(diff));
|
|
}
|
|
}
|
|
}
|
|
});
|
|
return r;
|
|
}
|
|
|
|
mutation_partition mutation_partition::difference(schema_ptr s, const mutation_partition& other) const
|
|
{
|
|
mutation_partition mp(s);
|
|
if (_tombstone > other._tombstone) {
|
|
mp.apply(_tombstone);
|
|
}
|
|
mp._static_row = _static_row.difference(*s, column_kind::static_column, other._static_row);
|
|
|
|
auto it_rt = other._row_tombstones.begin();
|
|
clustering_key_prefix::less_compare cmp_rt(*s);
|
|
for (auto&& rt : _row_tombstones) {
|
|
while (it_rt != other._row_tombstones.end() && cmp_rt(it_rt->prefix(), rt.prefix())) {
|
|
++it_rt;
|
|
}
|
|
if (it_rt == other._row_tombstones.end() || !it_rt->prefix().equal(*s, rt.prefix()) || rt.t() > it_rt->t()) {
|
|
mp.apply_row_tombstone(*s, rt.prefix(), rt.t());
|
|
}
|
|
}
|
|
|
|
auto it_r = other._rows.begin();
|
|
rows_entry::compare cmp_r(*s);
|
|
for (auto&& r : _rows) {
|
|
while (it_r != other._rows.end() && cmp_r(*it_r, r)) {
|
|
++it_r;
|
|
}
|
|
if (it_r == other._rows.end() || !it_r->key().equal(*s, r.key())) {
|
|
mp.insert_row(*s, r.key(), r.row());
|
|
} else {
|
|
auto dr = r.row().difference(*s, column_kind::regular_column, it_r->row());
|
|
if (!dr.empty()) {
|
|
mp.insert_row(*s, r.key(), std::move(dr));
|
|
}
|
|
}
|
|
}
|
|
return mp;
|
|
}
|
|
|
|
void mutation_partition::accept(const schema& s, mutation_partition_visitor& v) const {
|
|
v.accept_partition_tombstone(_tombstone);
|
|
_static_row.for_each_cell([&] (column_id id, const atomic_cell_or_collection& cell) {
|
|
const column_definition& def = s.static_column_at(id);
|
|
if (def.is_atomic()) {
|
|
v.accept_static_cell(id, cell.as_atomic_cell());
|
|
} else {
|
|
v.accept_static_cell(id, cell.as_collection_mutation());
|
|
}
|
|
});
|
|
for (const row_tombstones_entry& e : _row_tombstones) {
|
|
v.accept_row_tombstone(e.prefix(), e.t());
|
|
}
|
|
for (const rows_entry& e : _rows) {
|
|
const deletable_row& dr = e.row();
|
|
v.accept_row(e.key(), dr.deleted_at(), dr.marker());
|
|
dr.cells().for_each_cell([&] (column_id id, const atomic_cell_or_collection& cell) {
|
|
const column_definition& def = s.regular_column_at(id);
|
|
if (def.is_atomic()) {
|
|
v.accept_row_cell(id, cell.as_atomic_cell());
|
|
} else {
|
|
v.accept_row_cell(id, cell.as_collection_mutation());
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
void
|
|
mutation_partition::upgrade(const schema& old_schema, const schema& new_schema) {
|
|
// We need to copy to provide strong exception guarantees.
|
|
mutation_partition tmp(new_schema.shared_from_this());
|
|
converting_mutation_partition_applier v(old_schema.get_column_mapping(), new_schema, tmp);
|
|
accept(old_schema, v);
|
|
*this = std::move(tmp);
|
|
}
|