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c7f41c988f
Fixes #3562 Tests: dtest(compaction_test.py) Message-Id: <20180807190324.82014-1-rafie@scylladb.com>
82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
/*
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* Copyright (C) 2018 ScyllaDB
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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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#pragma once
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#include <cstdint>
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#include "schema.hh"
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namespace sstables {
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class sstable;
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class key;
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}
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namespace db {
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class large_partition_handler {
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public:
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struct stats {
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int64_t partitions_bigger_than_threshold = 0; // number of large partition updates exceeding threshold_bytes
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};
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private:
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uint64_t _threshold_bytes;
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mutable large_partition_handler::stats _stats;
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public:
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explicit large_partition_handler(uint64_t threshold_bytes = std::numeric_limits<uint64_t>::max()) : _threshold_bytes(threshold_bytes) {}
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virtual ~large_partition_handler() {}
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future<> maybe_update_large_partitions(const sstables::sstable& sst, const sstables::key& partition_key, uint64_t partition_size) const;
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future<> maybe_delete_large_partitions_entry(const sstables::sstable& sst) const;
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const large_partition_handler::stats& stats() const { return _stats; }
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protected:
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virtual future<> update_large_partitions(const schema& s, const sstring& sstable_name, const sstables::key& partition_key, uint64_t partition_size) const = 0;
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virtual future<> delete_large_partitions_entry(const schema& s, const sstring& sstable_name) const = 0;
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};
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class cql_table_large_partition_handler : public large_partition_handler {
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protected:
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static logging::logger large_partition_logger;
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public:
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explicit cql_table_large_partition_handler(uint64_t threshold_bytes) : large_partition_handler(threshold_bytes) {}
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protected:
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virtual future<> update_large_partitions(const schema& s, const sstring& sstable_name, const sstables::key& partition_key, uint64_t partition_size) const override;
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virtual future<> delete_large_partitions_entry(const schema& s, const sstring& sstable_name) const override;
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};
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class nop_large_partition_handler : public large_partition_handler {
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public:
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virtual future<> update_large_partitions(const schema& s, const sstring& sstable_name, const sstables::key& partition_key, uint64_t partition_size) const override {
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return make_ready_future<>();
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}
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virtual future<> delete_large_partitions_entry(const schema& s, const sstring& sstable_name) const override {
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return make_ready_future<>();
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}
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};
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}
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