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scylladb/tests/sstable_test.cc
Avi Kivity dc6be68852 Merge "promoted index for reading partial partitions" from Nadav 
"The goal of this patch series is to support reading and writing of a
"promoted index" - the Cassandra 2.* SSTable feature which allows reading
only a part of the partition without needing to read an entire partition
when it is very long. To make a long story short, a "promoted index" is
a sample of each partition's column names, written to the SSTable Index
file with that partition's entry. See a longer explanation of the index
file format, and the promoted index, here:

     https://github.com/scylladb/scylla/wiki/SSTables-Index-File

There are two main features in this series - first enabling reading of
parts of partitions (using the promoted index stored in an sstable),
and then enable writing promoted indexes to new sstables. These two
features are broken up into smaller stand-alone pieces to facilitate the
review.

Three features are still missing from this series and are planned to be
developed later:

1. When we fail to parse a partition's promoted index, we silently fall back
   to reading the entire partition. We should log (with rate limiting) and
   count these errors, to help in debugging sstable problems.

2. The current code only uses the promoted index when looking for a single
   contiguous clustering-key range. If the ck range is non-contiguous, we
   fall back to reading the entire partition. We should use the promoted
   index in that case too.

3. The current code only uses the promoted index when reading a single
   partition, via sstable::read_row(). When scanning through all or a
   range of partitions (read_rows() or read_range_rows()), we do not yet
   use the promoted index; We read contiguously from data file (we do not
   even read from the index file, so unsurprisingly we can't use it)."

(cherry picked from commit 700feda0db)
2016-08-09 17:54:15 +03:00

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/*
* Copyright (C) 2015 ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#define BOOST_TEST_DYN_LINK
#include <boost/test/unit_test.hpp>
#include "core/sstring.hh"
#include "core/future-util.hh"
#include "core/align.hh"
#include "core/do_with.hh"
#include "core/sleep.hh"
#include "sstables/sstables.hh"
#include "sstables/key.hh"
#include "tests/test-utils.hh"
#include "schema.hh"
#include "compress.hh"
#include "database.hh"
#include <memory>
#include "sstable_test.hh"
#include "tmpdir.hh"
#include "partition_slice_builder.hh"
#include "tests/test_services.hh"
#include "disk-error-handler.hh"
thread_local disk_error_signal_type commit_error;
thread_local disk_error_signal_type general_disk_error;
using namespace sstables;
bytes as_bytes(const sstring& s) {
return { reinterpret_cast<const int8_t*>(s.begin()), s.size() };
}
static future<> broken_sst(sstring dir, unsigned long generation) {
auto sst = std::make_unique<sstable>("ks", "cf", dir, generation, la, big);
auto fut = sst->load();
return std::move(fut).then_wrapped([sst = std::move(sst)] (future<> f) mutable {
try {
f.get();
BOOST_FAIL("expecting exception");
} catch (malformed_sstable_exception& e) {
// ok
}
return make_ready_future<>();
});
}
SEASTAR_TEST_CASE(empty_toc) {
return broken_sst("tests/sstables/badtoc", 1);
}
SEASTAR_TEST_CASE(alien_toc) {
return broken_sst("tests/sstables/badtoc", 2);
}
SEASTAR_TEST_CASE(truncated_toc) {
return broken_sst("tests/sstables/badtoc", 3);
}
SEASTAR_TEST_CASE(wrong_format_toc) {
return broken_sst("tests/sstables/badtoc", 4);
}
SEASTAR_TEST_CASE(compression_truncated) {
return broken_sst("tests/sstables/badcompression", 1);
}
SEASTAR_TEST_CASE(compression_bytes_flipped) {
return broken_sst("tests/sstables/badcompression", 2);
}
SEASTAR_TEST_CASE(uncompressed_data) {
return working_sst("tests/sstables/uncompressed", 1);
}
SEASTAR_TEST_CASE(compressed_data) {
return working_sst("tests/sstables/compressed", 1);
}
SEASTAR_TEST_CASE(composite_index) {
return working_sst("tests/sstables/composite", 1);
}
template<uint64_t SummaryIdx, uint64_t Expected>
future<> index_read(sstring path) {
return reusable_sst(path, 1).then([] (sstable_ptr ptr) {
return sstables::test(ptr).read_indexes(SummaryIdx).then([ptr] (auto vec) {
BOOST_REQUIRE(vec.size() == Expected);
return make_ready_future<>();
});
});
}
template<uint64_t SummaryIdx, uint64_t Expected>
future<> simple_index_read() {
return index_read<SummaryIdx, Expected>("tests/sstables/uncompressed");
}
template<uint64_t SummaryIdx, uint64_t Expected>
future<> composite_index_read() {
return index_read<SummaryIdx, Expected>("tests/sstables/composite");
}
SEASTAR_TEST_CASE(simple_index_read_0_4) {
return simple_index_read<0, 4>();
}
SEASTAR_TEST_CASE(simple_index_read_1_0) {
return simple_index_read<1, 0>();
}
SEASTAR_TEST_CASE(composite_index_read_0_20) {
return composite_index_read<0, 20>();
}
template<uint64_t Position, uint64_t EntryPosition, uint64_t EntryKeySize>
future<> summary_query(sstring path, int generation) {
return reusable_sst(path, generation).then([] (sstable_ptr ptr) {
return sstables::test(ptr).read_summary_entry(Position).then([ptr] (auto entry) {
BOOST_REQUIRE(entry.position == EntryPosition);
BOOST_REQUIRE(entry.key.size() == EntryKeySize);
return make_ready_future<>();
});
});
}
template<uint64_t Position, uint64_t EntryPosition, uint64_t EntryKeySize>
future<> summary_query_fail(sstring path, int generation) {
return summary_query<Position, EntryPosition, EntryKeySize>(path, generation).then_wrapped([] (auto fut) {
try {
fut.get();
} catch (std::out_of_range& ok) {
return make_ready_future<>();
}
return make_ready_future<>();
});
}
SEASTAR_TEST_CASE(small_summary_query_ok) {
return summary_query<0, 0, 5>("tests/sstables/uncompressed", 1);
}
SEASTAR_TEST_CASE(small_summary_query_fail) {
return summary_query_fail<2, 0, 5>("tests/sstables/uncompressed", 1);
}
SEASTAR_TEST_CASE(small_summary_query_negative_fail) {
return summary_query_fail<-2, 0, 5>("tests/sstables/uncompressed", 1);
}
SEASTAR_TEST_CASE(big_summary_query_0) {
return summary_query<0, 0, 182>("tests/sstables/bigsummary", 76);
}
SEASTAR_TEST_CASE(big_summary_query_32) {
return summary_query<32, 0xc4000, 182>("tests/sstables/bigsummary", 76);
}
// The following two files are just a copy of uncompressed's 1. But the Summary
// is removed (and removed from the TOC as well). We should reconstruct it
// in this case, so the queries should still go through
SEASTAR_TEST_CASE(missing_summary_query_ok) {
return summary_query<0, 0, 5>("tests/sstables/uncompressed", 2);
}
SEASTAR_TEST_CASE(missing_summary_query_fail) {
return summary_query_fail<2, 0, 5>("tests/sstables/uncompressed", 2);
}
SEASTAR_TEST_CASE(missing_summary_query_negative_fail) {
return summary_query_fail<-2, 0, 5>("tests/sstables/uncompressed", 2);
}
SEASTAR_TEST_CASE(missing_summary_first_last_sane) {
return reusable_sst("tests/sstables/uncompressed", 2).then([] (sstable_ptr ptr) {
auto& summary = sstables::test(ptr).get_summary();
BOOST_REQUIRE(summary.header.size == 1);
BOOST_REQUIRE(summary.positions.size() == 1);
BOOST_REQUIRE(summary.entries.size() == 1);
BOOST_REQUIRE(bytes_view(summary.first_key) == as_bytes("vinna"));
BOOST_REQUIRE(bytes_view(summary.last_key) == as_bytes("finna"));
return make_ready_future<>();
});
}
static future<sstable_ptr> do_write_sst(sstring load_dir, sstring write_dir, unsigned long generation) {
auto sst = make_lw_shared<sstable>("ks", "cf", load_dir, generation, la, big);
return sst->load().then([sst, write_dir, generation] {
sstables::test(sst).change_generation_number(generation + 1);
sstables::test(sst).change_dir(write_dir);
auto fut = sstables::test(sst).store();
return std::move(fut).then([sst = std::move(sst)] {
return make_ready_future<sstable_ptr>(std::move(sst));
});
});
}
static future<> write_sst_info(sstring load_dir, sstring write_dir, unsigned long generation) {
return do_write_sst(load_dir, write_dir, generation).then([] (auto ptr) { return make_ready_future<>(); });
}
using bufptr_t = std::unique_ptr<char [], free_deleter>;
static future<std::pair<bufptr_t, size_t>> read_file(sstring file_path)
{
return open_file_dma(file_path, open_flags::rw).then([] (file f) {
return f.size().then([f] (auto size) mutable {
auto aligned_size = align_up(size, 512UL);
auto buf = allocate_aligned_buffer<char>(aligned_size, 512UL);
auto rbuf = buf.get();
::memset(rbuf, 0, aligned_size);
return f.dma_read(0, rbuf, aligned_size).then([size, buf = std::move(buf), f] (auto ret) mutable {
BOOST_REQUIRE(ret == size);
std::pair<bufptr_t, size_t> p(std::move(buf), std::move(size));
return make_ready_future<std::pair<bufptr_t, size_t>>(std::move(p));
}).finally([f] () mutable { return f.close().finally([f] {}); });
});
});
}
struct sstdesc {
sstring dir;
int64_t gen;
};
static future<> compare_files(sstdesc file1, sstdesc file2, sstable::component_type component) {
auto file_path = sstable::filename(file1.dir, "ks", "cf", la, file1.gen, big, component);
return read_file(file_path).then([component, file2] (auto ret) {
auto file_path = sstable::filename(file2.dir, "ks", "cf", la, file2.gen, big, component);
return read_file(file_path).then([ret = std::move(ret)] (auto ret2) {
// assert that both files have the same size.
BOOST_REQUIRE(ret.second == ret2.second);
// assert that both files have the same content.
BOOST_REQUIRE(::memcmp(ret.first.get(), ret2.first.get(), ret.second) == 0);
// free buf from both files.
});
});
}
static future<> check_component_integrity(sstable::component_type component) {
auto tmp = make_lw_shared<tmpdir>();
return write_sst_info("tests/sstables/compressed", tmp->path, 1).then([component, tmp] {
return compare_files(sstdesc{"tests/sstables/compressed", 1 },
sstdesc{tmp->path, 2 },
component);
}).then([tmp] {});
}
SEASTAR_TEST_CASE(check_compressed_info_func) {
return check_component_integrity(sstable::component_type::CompressionInfo);
}
SEASTAR_TEST_CASE(check_summary_func) {
auto tmp = make_lw_shared<tmpdir>();
return do_write_sst("tests/sstables/compressed", tmp->path, 1).then([tmp] (auto sst1) {
auto sst2 = make_lw_shared<sstable>("ks", "cf", tmp->path, 2, la, big);
return sstables::test(sst2).read_summary().then([sst1, sst2] {
summary& sst1_s = sstables::test(sst1).get_summary();
summary& sst2_s = sstables::test(sst2).get_summary();
BOOST_REQUIRE(::memcmp(&sst1_s.header, &sst2_s.header, sizeof(summary::header)) == 0);
BOOST_REQUIRE(sst1_s.positions == sst2_s.positions);
BOOST_REQUIRE(sst1_s.entries == sst2_s.entries);
BOOST_REQUIRE(sst1_s.first_key.value == sst2_s.first_key.value);
BOOST_REQUIRE(sst1_s.last_key.value == sst2_s.last_key.value);
});
}).then([tmp] {});
}
SEASTAR_TEST_CASE(check_filter_func) {
return check_component_integrity(sstable::component_type::Filter);
}
SEASTAR_TEST_CASE(check_statistics_func) {
auto tmp = make_lw_shared<tmpdir>();
return do_write_sst("tests/sstables/compressed", tmp->path, 1).then([tmp] (auto sst1) {
auto sst2 = make_lw_shared<sstable>("ks", "cf", tmp->path, 2, la, big);
return sstables::test(sst2).read_statistics().then([sst1, sst2] {
statistics& sst1_s = sstables::test(sst1).get_statistics();
statistics& sst2_s = sstables::test(sst2).get_statistics();
BOOST_REQUIRE(sst1_s.hash.map.size() == sst2_s.hash.map.size());
BOOST_REQUIRE(sst1_s.contents.size() == sst2_s.contents.size());
return do_for_each(sst1_s.hash.map.begin(), sst1_s.hash.map.end(),
[sst1, sst2, &sst1_s, &sst2_s] (auto val) {
BOOST_REQUIRE(val.second == sst2_s.hash.map[val.first]);
return make_ready_future<>();
});
// TODO: compare the field contents from both sstables.
});
}).then([tmp] {});
}
SEASTAR_TEST_CASE(check_toc_func) {
auto tmp = make_lw_shared<tmpdir>();
return do_write_sst("tests/sstables/compressed", tmp->path, 1).then([tmp] (auto sst1) {
auto sst2 = make_lw_shared<sstable>("ks", "cf", tmp->path, 2, la, big);
return sstables::test(sst2).read_toc().then([sst1, sst2] {
auto& sst1_c = sstables::test(sst1).get_components();
auto& sst2_c = sstables::test(sst2).get_components();
BOOST_REQUIRE(sst1_c == sst2_c);
});
}).then([tmp] {});
}
SEASTAR_TEST_CASE(uncompressed_random_access_read) {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
// note: it's important to pass on a shared copy of sstp to prevent its
// destruction until the continuation finishes reading!
return sstables::test(sstp).data_read(97, 6).then([sstp] (temporary_buffer<char> buf) {
BOOST_REQUIRE(sstring(buf.get(), buf.size()) == "gustaf");
return make_ready_future<>();
});
});
}
SEASTAR_TEST_CASE(compressed_random_access_read) {
return reusable_sst("tests/sstables/compressed", 1).then([] (auto sstp) {
return sstables::test(sstp).data_read(97, 6).then([sstp] (temporary_buffer<char> buf) {
BOOST_REQUIRE(sstring(buf.get(), buf.size()) == "gustaf");
return make_ready_future<>();
});
});
}
class test_row_consumer : public row_consumer {
public:
const int64_t desired_timestamp;
test_row_consumer(int64_t t) : desired_timestamp(t) { }
int count_row_start = 0;
int count_cell = 0;
int count_deleted_cell = 0;
int count_range_tombstone = 0;
int count_row_end = 0;
virtual proceed consume_row_start(sstables::key_view key, sstables::deletion_time deltime) override {
BOOST_REQUIRE(bytes_view(key) == as_bytes("vinna"));
BOOST_REQUIRE(deltime.local_deletion_time == std::numeric_limits<int32_t>::max());
BOOST_REQUIRE(deltime.marked_for_delete_at == std::numeric_limits<int64_t>::min());
count_row_start++;
return proceed::yes;
}
virtual proceed consume_cell(bytes_view col_name, bytes_view value,
int64_t timestamp, int32_t ttl, int32_t expiration) override {
BOOST_REQUIRE(ttl == 0);
BOOST_REQUIRE(expiration == 0);
switch (count_cell) {
case 0:
// The silly "cql marker" column
BOOST_REQUIRE(col_name.size() == 3 && col_name[0] == 0 && col_name[1] == 0 && col_name[2] == 0);
BOOST_REQUIRE(value.size() == 0);
BOOST_REQUIRE(timestamp == desired_timestamp);
break;
case 1:
BOOST_REQUIRE(col_name.size() == 7 && col_name[0] == 0 &&
col_name[1] == 4 && col_name[2] == 'c' &&
col_name[3] == 'o' && col_name[4] == 'l' &&
col_name[5] == '1' && col_name[6] == '\0');
BOOST_REQUIRE(value == as_bytes("daughter"));
BOOST_REQUIRE(timestamp == desired_timestamp);
break;
case 2:
BOOST_REQUIRE(col_name.size() == 7 && col_name[0] == 0 &&
col_name[1] == 4 && col_name[2] == 'c' &&
col_name[3] == 'o' && col_name[4] == 'l' &&
col_name[5] == '2' && col_name[6] == '\0');
BOOST_REQUIRE(value.size() == 4 && value[0] == 0 &&
value[1] == 0 && value[2] == 0 && value[3] == 3);
BOOST_REQUIRE(timestamp == desired_timestamp);
break;
}
count_cell++;
return proceed::yes;
}
virtual proceed consume_deleted_cell(bytes_view col_name, sstables::deletion_time deltime) override {
count_deleted_cell++;
return proceed::yes;
}
virtual proceed consume_range_tombstone(
bytes_view start_col, bytes_view end_col,
sstables::deletion_time deltime) override {
count_range_tombstone++;
return proceed::yes;
}
virtual proceed consume_row_end() override {
count_row_end++;
return proceed::yes;
}
virtual const io_priority_class& io_priority() override {
return default_priority_class();
}
};
SEASTAR_TEST_CASE(uncompressed_row_read_at_once) {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
return do_with(test_row_consumer(1418656871665302), [sstp] (auto& c) {
return sstp->data_consume_rows_at_once(c, 0, 95).then([sstp, &c] {
BOOST_REQUIRE(c.count_row_start == 1);
BOOST_REQUIRE(c.count_cell == 3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_row_end == 1);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
});
});
});
}
SEASTAR_TEST_CASE(compressed_row_read_at_once) {
return reusable_sst("tests/sstables/compressed", 1).then([] (auto sstp) {
return do_with(test_row_consumer(1418654707438005), [sstp] (auto& c) {
return sstp->data_consume_rows_at_once(c, 0, 95).then([sstp, &c] {
BOOST_REQUIRE(c.count_row_start == 1);
BOOST_REQUIRE(c.count_cell == 3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_row_end == 1);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
});
});
});
}
SEASTAR_TEST_CASE(uncompressed_rows_read_one) {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
return do_with(test_row_consumer(1418656871665302), [sstp] (auto& c) {
auto context = sstp->data_consume_rows(c, {0, 95});
auto fut = context.read();
return fut.then([sstp, &c, context = std::move(context)] {
BOOST_REQUIRE(c.count_row_start == 1);
BOOST_REQUIRE(c.count_cell == 3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_row_end == 1);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
});
});
});
}
SEASTAR_TEST_CASE(compressed_rows_read_one) {
return reusable_sst("tests/sstables/compressed", 1).then([] (auto sstp) {
return do_with(test_row_consumer(1418654707438005), [sstp] (auto& c) {
auto context = sstp->data_consume_rows(c, {0, 95});
auto fut = context.read();
return fut.then([sstp, &c, context = std::move(context)] {
BOOST_REQUIRE(c.count_row_start == 1);
BOOST_REQUIRE(c.count_cell == 3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_row_end == 1);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
});
});
});
}
// Tests for iterating over all rows.
class count_row_consumer : public row_consumer {
public:
int count_row_start = 0;
int count_cell = 0;
int count_deleted_cell = 0;
int count_row_end = 0;
int count_range_tombstone = 0;
virtual proceed consume_row_start(sstables::key_view key, sstables::deletion_time deltime) override {
count_row_start++;
return proceed::yes;
}
virtual proceed consume_cell(bytes_view col_name, bytes_view value,
int64_t timestamp, int32_t ttl, int32_t expiration) override {
count_cell++;
return proceed::yes;
}
virtual proceed consume_deleted_cell(bytes_view col_name, sstables::deletion_time deltime) override {
count_deleted_cell++;
return proceed::yes;
}
virtual proceed consume_row_end() override {
count_row_end++;
return proceed::yes;
}
virtual proceed consume_range_tombstone(
bytes_view start_col, bytes_view end_col,
sstables::deletion_time deltime) override {
count_range_tombstone++;
return proceed::yes;
}
virtual const io_priority_class& io_priority() override {
return default_priority_class();
}
};
SEASTAR_TEST_CASE(uncompressed_rows_read_all) {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
return do_with(count_row_consumer(), [sstp] (auto& c) {
auto context = sstp->data_consume_rows(c);
auto fut = context.read();
return fut.then([sstp, &c, context = std::move(context)] {
BOOST_REQUIRE(c.count_row_start == 4);
BOOST_REQUIRE(c.count_row_end == 4);
BOOST_REQUIRE(c.count_cell == 4*3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
});
});
});
}
SEASTAR_TEST_CASE(compressed_rows_read_all) {
return reusable_sst("tests/sstables/compressed", 1).then([] (auto sstp) {
return do_with(count_row_consumer(), [sstp] (auto& c) {
auto context = sstp->data_consume_rows(c);
auto fut = context.read();
return fut.then([sstp, &c, context = std::move(context)] {
BOOST_REQUIRE(c.count_row_start == 4);
BOOST_REQUIRE(c.count_row_end == 4);
BOOST_REQUIRE(c.count_cell == 4*3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
});
});
});
}
// test reading all the rows one by one, using the feature of the
// consume_row_end returning proceed::no message
class pausable_count_row_consumer : public count_row_consumer {
public:
virtual proceed consume_row_end() override {
count_row_consumer::consume_row_end();
return proceed::no;
}
};
SEASTAR_TEST_CASE(pausable_uncompressed_rows_read_all) {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
return do_with(pausable_count_row_consumer(), [sstp] (auto& c) {
auto context = sstp->data_consume_rows(c);
auto fut = context.read();
return fut.then([sstp, &c, context = std::move(context)] () mutable {
// After one read, we only get one row
BOOST_REQUIRE(c.count_row_start == 1);
BOOST_REQUIRE(c.count_row_end == 1);
BOOST_REQUIRE(c.count_cell == 1*3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_range_tombstone == 0);
auto fut = context.read();
return fut.then([&c, context = std::move(context)] () mutable {
// After two reads
BOOST_REQUIRE(c.count_row_start == 2);
BOOST_REQUIRE(c.count_row_end == 2);
BOOST_REQUIRE(c.count_cell == 2*3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
// FIXME: read until the last row.
});
});
});
});
}
// Test reading range tombstone (which we we have in collections such as set)
class set_consumer : public count_row_consumer {
public:
virtual proceed consume_range_tombstone(
bytes_view start_col, bytes_view end_col,
sstables::deletion_time deltime) override {
count_row_consumer::consume_range_tombstone(start_col, end_col, deltime);
// Note the unique end-of-component markers -1 and 1, specifying a
// range between start and end of row.
BOOST_REQUIRE(start_col == bytes({0, 9, 'f', 'a', 'v', 'o', 'r', 'i', 't', 'e', 's', -1}));
BOOST_REQUIRE(end_col == as_bytes({0, 9, 'f', 'a', 'v', 'o', 'r', 'i', 't', 'e', 's', 1}));
// Note the range tombstone have an interesting, not default, deltime.
BOOST_REQUIRE(deltime.local_deletion_time == 1428855312U);
BOOST_REQUIRE(deltime.marked_for_delete_at == 1428855312063524UL);
return proceed::yes;
}
};
SEASTAR_TEST_CASE(read_set) {
return reusable_sst("tests/sstables/set", 1).then([] (auto sstp) {
return do_with(set_consumer(), [sstp] (auto& c) {
auto context = sstp->data_consume_rows(c);
auto fut = context.read();
return fut.then([sstp, &c, context = std::move(context)] {
BOOST_REQUIRE(c.count_row_start == 1);
BOOST_REQUIRE(c.count_row_end == 1);
BOOST_REQUIRE(c.count_cell == 3);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_range_tombstone == 1);
return make_ready_future<>();
});
});
});
}
class ttl_row_consumer : public count_row_consumer {
public:
const int64_t desired_timestamp;
ttl_row_consumer(int64_t t) : desired_timestamp(t) { }
virtual proceed consume_row_start(sstables::key_view key, sstables::deletion_time deltime) override {
count_row_consumer::consume_row_start(key, deltime);
BOOST_REQUIRE(bytes_view(key) == as_bytes("nadav"));
BOOST_REQUIRE(deltime.local_deletion_time == std::numeric_limits<int32_t>::max());
BOOST_REQUIRE(deltime.marked_for_delete_at == std::numeric_limits<int64_t>::min());
return proceed::yes;
}
virtual proceed consume_cell(bytes_view col_name, bytes_view value,
int64_t timestamp, int32_t ttl, int32_t expiration) override {
switch (count_cell) {
case 0:
// The silly "cql row marker" cell
BOOST_REQUIRE(col_name.size() == 3 && col_name[0] == 0 && col_name[1] == 0 && col_name[2] == 0);
BOOST_REQUIRE(value.size() == 0);
BOOST_REQUIRE(timestamp == desired_timestamp);
BOOST_REQUIRE(ttl == 3600);
BOOST_REQUIRE(expiration == 1430154618);
break;
case 1:
BOOST_REQUIRE(col_name.size() == 6 && col_name[0] == 0 &&
col_name[1] == 3 && col_name[2] == 'a' &&
col_name[3] == 'g' && col_name[4] == 'e' &&
col_name[5] == '\0');
BOOST_REQUIRE(value.size() == 4 && value[0] == 0 && value[1] == 0
&& value[2] == 0 && value[3] == 40);
BOOST_REQUIRE(timestamp == desired_timestamp);
BOOST_REQUIRE(ttl == 3600);
BOOST_REQUIRE(expiration == 1430154618);
break;
}
count_row_consumer::consume_cell(col_name, value, timestamp, ttl, expiration);
return proceed::yes;
}
};
SEASTAR_TEST_CASE(ttl_read) {
return reusable_sst("tests/sstables/ttl", 1).then([] (auto sstp) {
return do_with(ttl_row_consumer(1430151018675502), [sstp] (auto& c) {
auto context = sstp->data_consume_rows(c);
auto fut = context.read();
return fut.then([sstp, &c, context = std::move(context)] {
BOOST_REQUIRE(c.count_row_start == 1);
BOOST_REQUIRE(c.count_cell == 2);
BOOST_REQUIRE(c.count_deleted_cell == 0);
BOOST_REQUIRE(c.count_row_end == 1);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
});
});
});
}
class deleted_cell_row_consumer : public count_row_consumer {
public:
virtual proceed consume_row_start(sstables::key_view key, sstables::deletion_time deltime) override {
count_row_consumer::consume_row_start(key, deltime);
BOOST_REQUIRE(bytes_view(key) == as_bytes("nadav"));
BOOST_REQUIRE(deltime.local_deletion_time == std::numeric_limits<int32_t>::max());
BOOST_REQUIRE(deltime.marked_for_delete_at == std::numeric_limits<int64_t>::min());
return proceed::yes;
}
virtual proceed consume_deleted_cell(bytes_view col_name, sstables::deletion_time deltime) override {
count_row_consumer::consume_deleted_cell(col_name, deltime);
BOOST_REQUIRE(col_name.size() == 6 && col_name[0] == 0 &&
col_name[1] == 3 && col_name[2] == 'a' &&
col_name[3] == 'g' && col_name[4] == 'e' &&
col_name[5] == '\0');
BOOST_REQUIRE(deltime.local_deletion_time == 1430200516);
BOOST_REQUIRE(deltime.marked_for_delete_at == 1430200516937621UL);
return proceed::yes;
}
};
SEASTAR_TEST_CASE(deleted_cell_read) {
return reusable_sst("tests/sstables/deleted_cell", 2).then([] (auto sstp) {
return do_with(deleted_cell_row_consumer(), [sstp] (auto& c) {
auto context = sstp->data_consume_rows(c);
auto fut = context.read();
return fut.then([sstp, &c, context = std::move(context)] {
BOOST_REQUIRE(c.count_row_start == 1);
BOOST_REQUIRE(c.count_cell == 0);
BOOST_REQUIRE(c.count_deleted_cell == 1);
BOOST_REQUIRE(c.count_row_end == 1);
BOOST_REQUIRE(c.count_range_tombstone == 0);
return make_ready_future<>();
});
});
});
}
SEASTAR_TEST_CASE(find_key_map) {
return reusable_sst("tests/sstables/map_pk", 1).then([] (auto sstp) {
schema_ptr s = map_schema();
auto& summary = sstables::test(sstp)._summary();
std::vector<data_value> kk;
auto b1 = to_bytes("2");
auto b2 = to_bytes("2");
auto map_type = map_type_impl::get_instance(bytes_type, bytes_type, true);
auto map_element = std::make_pair<data_value, data_value>(data_value(b1), data_value(b2));
std::vector<std::pair<data_value, data_value>> map;
map.push_back(map_element);
kk.push_back(make_map_value(map_type, map));
auto key = sstables::key::from_deeply_exploded(*s, kk);
BOOST_REQUIRE(sstables::test(sstp).binary_search(summary.entries, key) == 0);
});
}
SEASTAR_TEST_CASE(find_key_set) {
return reusable_sst("tests/sstables/set_pk", 1).then([] (auto sstp) {
schema_ptr s = set_schema();
auto& summary = sstables::test(sstp)._summary();
std::vector<data_value> kk;
std::vector<data_value> set;
bytes b1("1");
bytes b2("2");
set.push_back(data_value(b1));
set.push_back(data_value(b2));
auto set_type = set_type_impl::get_instance(bytes_type, true);
kk.push_back(make_set_value(set_type, set));
auto key = sstables::key::from_deeply_exploded(*s, kk);
BOOST_REQUIRE(sstables::test(sstp).binary_search(summary.entries, key) == 0);
});
}
SEASTAR_TEST_CASE(find_key_list) {
return reusable_sst("tests/sstables/list_pk", 1).then([] (auto sstp) {
schema_ptr s = set_schema();
auto& summary = sstables::test(sstp)._summary();
std::vector<data_value> kk;
std::vector<data_value> list;
bytes b1("1");
bytes b2("2");
list.push_back(data_value(b1));
list.push_back(data_value(b2));
auto list_type = list_type_impl::get_instance(bytes_type, true);
kk.push_back(make_list_value(list_type, list));
auto key = sstables::key::from_deeply_exploded(*s, kk);
BOOST_REQUIRE(sstables::test(sstp).binary_search(summary.entries, key) == 0);
});
}
SEASTAR_TEST_CASE(find_key_composite) {
return reusable_sst("tests/sstables/composite", 1).then([] (auto sstp) {
schema_ptr s = composite_schema();
auto& summary = sstables::test(sstp)._summary();
std::vector<data_value> kk;
auto b1 = bytes("HCG8Ee7ENWqfCXipk4-Ygi2hzrbfHC8pTtH3tEmV3d9p2w8gJPuMN_-wp1ejLRf4kNEPEgtgdHXa6NoFE7qUig==");
auto b2 = bytes("VJizqYxC35YpLaPEJNt_4vhbmKJxAg54xbiF1UkL_9KQkqghVvq34rZ6Lm8eRTi7JNJCXcH6-WtNUSFJXCOfdg==");
kk.push_back(data_value(b1));
kk.push_back(data_value(b2));
auto key = sstables::key::from_deeply_exploded(*s, kk);
BOOST_REQUIRE(sstables::test(sstp).binary_search(summary.entries, key) == 0);
});
}
SEASTAR_TEST_CASE(all_in_place) {
return reusable_sst("tests/sstables/bigsummary", 76).then([] (auto sstp) {
auto& summary = sstables::test(sstp)._summary();
int idx = 0;
for (auto& e: summary.entries) {
auto key = sstables::key::from_bytes(e.key);
BOOST_REQUIRE(sstables::test(sstp).binary_search(summary.entries, key) == idx++);
}
});
}
SEASTAR_TEST_CASE(full_index_search) {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
return sstables::test(sstp).read_indexes(0).then([sstp] (auto index_list) {
int idx = 0;
for (auto& ie: index_list) {
auto key = key::from_bytes(to_bytes(ie.get_key_bytes()));
BOOST_REQUIRE(sstables::test(sstp).binary_search(index_list, key) == idx++);
}
});
});
}
SEASTAR_TEST_CASE(not_find_key_composite_bucket0) {
return reusable_sst("tests/sstables/composite", 1).then([] (auto sstp) {
schema_ptr s = composite_schema();
auto& summary = sstables::test(sstp)._summary();
std::vector<data_value> kk;
auto b1 = bytes("ZEunFCoqAidHOrPiU3U6UAvUU01IYGvT3kYtYItJ1ODTk7FOsEAD-dqmzmFNfTDYvngzkZwKrLxthB7ItLZ4HQ==");
auto b2 = bytes("K-GpWx-QtyzLb12z5oNS0C03d3OzNyBKdYJh1XjHiC53KudoqdoFutHUMFLe6H9Emqv_fhwIJEKEb5Csn72f9A==");
kk.push_back(data_value(b1));
kk.push_back(data_value(b2));
auto key = sstables::key::from_deeply_exploded(*s, kk);
// (result + 1) * -1 -1 = 0
BOOST_REQUIRE(sstables::test(sstp).binary_search(summary.entries, key) == -2);
});
}
// See CASSANDRA-7593. This sstable writes 0 in the range_start. We need to handle that case as well
SEASTAR_TEST_CASE(wrong_range) {
return reusable_sst("tests/sstables/wrongrange", 114).then([] (auto sstp) {
return do_with(sstables::key("todata"), [sstp] (auto& key) {
auto s = columns_schema();
return sstp->read_row(s, key).then([sstp, s, &key] (auto mutation) {
return make_ready_future<>();
});
});
});
}
static future<>
test_sstable_exists(sstring dir, unsigned long generation, bool exists) {
auto file_path = sstable::filename(dir, "ks", "cf", la, generation, big, sstable::component_type::Data);
return open_file_dma(file_path, open_flags::ro).then_wrapped([exists] (future<file> f) {
if (exists) {
BOOST_CHECK_NO_THROW(f.get0());
} else {
BOOST_REQUIRE_THROW(f.get0(), std::system_error);
}
return make_ready_future<>();
});
}
// We need to be careful not to allow failures in this test to contaminate subsequent runs.
// We will therefore run it in an empty directory, and first link a known SSTable from another
// directory to it.
SEASTAR_TEST_CASE(set_generation) {
return test_setup::do_with_test_directory([] {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
return sstp->create_links("tests/sstables/generation").then([sstp] {});
}).then([] {
return reusable_sst("tests/sstables/generation", 1).then([] (auto sstp) {
return sstp->set_generation(2).then([sstp] {});
});
}).then([] {
return test_sstable_exists("tests/sstables/generation", 1, false);
}).then([] {
return compare_files(sstdesc{"tests/sstables/uncompressed", 1 },
sstdesc{"tests/sstables/generation", 2 },
sstable::component_type::Data);
});
}, "tests/sstables/generation");
}
SEASTAR_TEST_CASE(reshuffle) {
return test_setup::do_with_test_directory([] {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
return sstp->create_links("tests/sstables/generation", 1).then([sstp] {
return sstp->create_links("tests/sstables/generation", 5).then([sstp] {
return sstp->create_links("tests/sstables/generation", 10);
});
}).then([sstp] {});
}).then([] {
auto cm = make_lw_shared<compaction_manager>();
cm->start();
column_family::config cfg;
cfg.datadir = "tests/sstables/generation";
cfg.enable_commitlog = false;
cfg.enable_incremental_backups = false;
auto cf = make_lw_shared<column_family>(uncompressed_schema(), cfg, column_family::no_commitlog(), *cm);
cf->start();
cf->mark_ready_for_writes();
std::set<int64_t> existing_sstables = { 1, 5 };
return cf->reshuffle_sstables(existing_sstables, 6).then([cm, cf] (std::vector<sstables::entry_descriptor> reshuffled) {
BOOST_REQUIRE(reshuffled.size() == 1);
BOOST_REQUIRE(reshuffled[0].generation == 6);
return when_all(
test_sstable_exists("tests/sstables/generation", 1, true),
test_sstable_exists("tests/sstables/generation", 2, false),
test_sstable_exists("tests/sstables/generation", 3, false),
test_sstable_exists("tests/sstables/generation", 4, false),
test_sstable_exists("tests/sstables/generation", 5, true),
test_sstable_exists("tests/sstables/generation", 6, true),
test_sstable_exists("tests/sstables/generation", 10, false)
).discard_result().then([cm] {
return cm->stop();
});
}).then([cm, cf] {});
});
}, "tests/sstables/generation");
}
SEASTAR_TEST_CASE(statistics_rewrite) {
return test_setup::do_with_test_directory([] {
return reusable_sst("tests/sstables/uncompressed", 1).then([] (auto sstp) {
return sstp->create_links("tests/sstables/generation").then([sstp] {});
}).then([] {
return test_sstable_exists("tests/sstables/generation", 1, true);
}).then([] {
return reusable_sst("tests/sstables/generation", 1).then([] (auto sstp) {
// mutate_sstable_level results in statistics rewrite
return sstp->mutate_sstable_level(10).then([sstp] {});
});
}).then([] {
return reusable_sst("tests/sstables/generation", 1).then([] (auto sstp) {
BOOST_REQUIRE(sstp->get_sstable_level() == 10);
});
});
}, "tests/sstables/generation");
}
// Tests for reading a large partition for which the index contains a
// "promoted index", i.e., a sample of the column names inside the partition,
// with which we can avoid reading the entire partition when we look only
// for a specific subset of columns. The test sstable for the read test was
// generated in Cassandra.
static schema_ptr large_partition_schema() {
static thread_local auto s = [] {
schema_builder builder(make_lw_shared(schema(
generate_legacy_id("try1", "data"), "try1", "data",
// partition key
{{"t1", utf8_type}},
// clustering key
{{"t2", utf8_type}},
// regular columns
{{"t3", utf8_type}},
// static columns
{},
// regular column name type
utf8_type,
// comment
""
)));
return builder.build(schema_builder::compact_storage::no);
}();
return s;
}
static future<lw_shared_ptr<sstable>> load_large_partition_sst() {
auto sst = make_lw_shared<sstable>(
"try1", "data", "tests/sstables/large_partition", 3,
sstables::sstable::version_types::ka, big);
auto fut = sst->load();
return std::move(fut).then([sst = std::move(sst)] {
return std::move(sst);
});
}
// This is a rudimentary test that reads an sstable exported from Cassandra
// which contains a promoted index. It just checks that the promoted index
// is read from disk, as an unparsed array, and doesn't actually use it to
// search for anything.
SEASTAR_TEST_CASE(promoted_index_read) {
return load_large_partition_sst().then([] (auto sstp) {
schema_ptr s = large_partition_schema();
return sstables::test(sstp).read_indexes(0).then([sstp] (index_list vec) {
BOOST_REQUIRE(vec.size() == 1);
index_entry &e = vec[0];
BOOST_REQUIRE(e.get_promoted_index_bytes().size() == 468);
});
});
}
// Use an empty string for ck1, ck2, or both, for unbounded ranges.
static query::partition_slice make_partition_slice(const schema& s, sstring ck1, sstring ck2) {
std::experimental::optional<query::clustering_range::bound> b1;
if (!ck1.empty()) {
b1.emplace(clustering_key_prefix::from_single_value(
s, utf8_type->decompose(ck1)));
}
std::experimental::optional<query::clustering_range::bound> b2;
if (!ck2.empty()) {
b2.emplace(clustering_key_prefix::from_single_value(
s, utf8_type->decompose(ck2)));
}
return partition_slice_builder(s).
with_range(query::clustering_range(b1, b2)).build();
}
// Count the number of CQL rows in one partition between clustering key
// prefix ck1 to ck2.
static future<int> count_rows(sstable_ptr sstp, schema_ptr s, sstring key, sstring ck1, sstring ck2) {
return seastar::async([sstp, s, key, ck1, ck2] () mutable {
auto ps = make_partition_slice(*s, ck1, ck2);
auto row = sstp->read_row(s, sstables::key(key.c_str()),
query::clustering_key_filtering_context::create(s, ps)).get0();
if (!row) {
return 0;
}
int nrows = 0;
auto mfopt = (*row)().get0();
while (mfopt) {
if (mfopt->is_clustering_row()) {
nrows++;
}
mfopt = (*row)().get0();
}
return nrows;
});
}
// Count the number of CQL rows in one partition
static future<int> count_rows(sstable_ptr sstp, schema_ptr s, sstring key) {
return seastar::async([sstp, s, key] () mutable {
auto row = sstp->read_row(s, sstables::key(key.c_str())).get0();
if (!row) {
return 0;
}
int nrows = 0;
auto mfopt = (*row)().get0();
while (mfopt) {
if (mfopt->is_clustering_row()) {
nrows++;
}
mfopt = (*row)().get0();
}
return nrows;
});
}
// Count the number of CQL rows between clustering key prefix ck1 to ck2
// in all partitions in the sstable (using sstable::read_range_rows).
static future<int> count_rows(sstable_ptr sstp, schema_ptr s, sstring ck1, sstring ck2) {
return seastar::async([sstp, s, ck1, ck2] () mutable {
auto ps = make_partition_slice(*s, ck1, ck2);
auto reader = sstp->read_range_rows(s, query::full_partition_range,
query::clustering_key_filtering_context::create(s, ps));
int nrows = 0;
auto smopt = reader.read().get0();
while (smopt) {
auto mfopt = (*smopt)().get0();
while (mfopt) {
if (mfopt->is_clustering_row()) {
nrows++;
}
mfopt = (*smopt)().get0();
}
smopt = reader.read().get0();
}
return nrows;
});
}
// This test reads, using sstable::read_row(), a slice (a range of clustering
// rows) from one large partition in an sstable written in Cassandra.
// This large partition includes 13520 clustering rows, and spans about
// 700 KB on disk. When we ask to read only a part of it, the promoted index
// (included in this sstable) may be used to allow reading only a part of the
// partition from disk. This test doesn't directly verify that the promoted
// index is actually used - and can work even without a promoted index
// support - but can be used to check that adding promoted index read supports
// did not break anything.
// To verify that the promoted index was actually used to reduce the size
// of read from disk, add printouts to the row reading code.
SEASTAR_TEST_CASE(sub_partition_read) {
schema_ptr s = large_partition_schema();
return load_large_partition_sst().then([s] (auto sstp) {
return count_rows(sstp, s, "v1", "18wX", "18xB").then([] (int nrows) {
// there should be 5 rows (out of 13520 = 20*26*26) in this range:
// 18wX, 18wY, 18wZ, 18xA, 18xB.
BOOST_REQUIRE(nrows == 5);
}).then([sstp, s] () {
return count_rows(sstp, s, "v1", "13aB", "15aA").then([] (int nrows) {
// There should be 26*26*2 rows in this range. It spans two
// promoted-index blocks, so we get to test that case.
BOOST_REQUIRE(nrows == 2*26*26);
});
}).then([sstp, s] () {
return count_rows(sstp, s, "v1", "10aB", "19aA").then([] (int nrows) {
// There should be 26*26*9 rows in this range. It spans many
// promoted-index blocks.
BOOST_REQUIRE(nrows == 9*26*26);
});
}).then([sstp, s] () {
return count_rows(sstp, s, "v1", "0", "z").then([] (int nrows) {
// All rows, 20*26*26 of them, are in this range. It spans all
// the promoted-index blocks, but the range is still bounded
// on both sides
BOOST_REQUIRE(nrows == 20*26*26);
});
}).then([sstp, s] () {
// range that is outside (after) the actual range of the data.
// No rows should match.
return count_rows(sstp, s, "v1", "y", "z").then([] (int nrows) {
BOOST_REQUIRE(nrows == 0);
});
}).then([sstp, s] () {
// range that is outside (before) the actual range of the data.
// No rows should match.
return count_rows(sstp, s, "v1", "_a", "_b").then([] (int nrows) {
BOOST_REQUIRE(nrows == 0);
});
}).then([sstp, s] () {
// half-infinite range
return count_rows(sstp, s, "v1", "", "10aA").then([] (int nrows) {
BOOST_REQUIRE(nrows == (1*26*26 + 1));
});
}).then([sstp, s] () {
// half-infinite range
return count_rows(sstp, s, "v1", "10aA", "").then([] (int nrows) {
BOOST_REQUIRE(nrows == 19*26*26);
});
}).then([sstp, s] () {
// count all rows, but giving an explicit all-encompasing filter
return count_rows(sstp, s, "v1", "", "").then([] (int nrows) {
BOOST_REQUIRE(nrows == 20*26*26);
});
}).then([sstp, s] () {
// count all rows, without a filter
return count_rows(sstp, s, "v1").then([] (int nrows) {
BOOST_REQUIRE(nrows == 20*26*26);
});
});
});
}
// Same as previous test, just using read_range_rows instead of read_row
// to read parts of potentially more than one partition (in this particular
// sstable, there is actually just one partition).
SEASTAR_TEST_CASE(sub_partitions_read) {
schema_ptr s = large_partition_schema();
return load_large_partition_sst().then([s] (auto sstp) {
return count_rows(sstp, s, "18wX", "18xB").then([] (int nrows) {
BOOST_REQUIRE(nrows == 5);
});
});
}
// A silly, inefficient but effective, way to compare two files by reading
// them entirely into memory.
static future<> compare_files(sstring file1, sstring file2) {
return read_file(file1).then([file2] (auto in1) {
return read_file(file2).then([in1 = std::move(in1)] (auto in2) {
// assert that both files have the same size.
BOOST_REQUIRE(in1.second == in2.second);
// assert that both files have the same content.
BOOST_REQUIRE(::memcmp(in1.first.get(), in2.first.get(), in1.second) == 0);
});
});
}
// This test creates the same data as we previously created with Cassandra
// in the tests/sstables/large_partition directory (which we read in the
// promoted_index_read test above). The index file in both sstables - which
// includes the promoted index - should be bit-for-bit identical, otherwise
// we have a problem in our promoted index writing code (or in the data
// writing code, because the promoted index points to offsets in the data).
SEASTAR_TEST_CASE(promoted_index_write) {
return test_setup::do_with_test_directory([] {
auto s = large_partition_schema();
auto mtp = make_lw_shared<memtable>(s);
auto key = partition_key::from_exploded(*s, {to_bytes("v1")});
mutation m(key, s);
auto col = s->get_column_definition("t3");
BOOST_REQUIRE(col && !col->is_static());
for (char i = 'a'; i <= 'z'; i++) {
for (char j = 'A'; j <= 'Z'; j++) {
for (int k = 0; k < 20; k++) {
auto& row = m.partition().clustered_row(
clustering_key::from_exploded(
*s, {to_bytes(sprint("%d%c%c", k, i, j))}));
row.cells().apply(*col,
atomic_cell::make_live(2345,
col->type->decompose(sstring(sprint("z%c",i)))));
row.apply(row_marker(1234));
}
}
}
mtp->apply(std::move(m));
auto sst = make_lw_shared<sstable>("try1", "data",
"tests/sstables/tests-temporary", 100,
sstables::sstable::version_types::ka, big);
return sst->write_components(*mtp).then([s] {
return compare_files(
"tests/sstables/large_partition/try1-data-ka-3-Index.db",
"tests/sstables/tests-temporary/try1-data-ka-100-Index.db");
}).then([sst, mtp] {});
});
}
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