5997f6b17b
Summary: Add status check for unit tests : block_based_filter_block_test, block_fetcher_test, full_filter_block_test and partitioned_filter_block_test Pull Request resolved: https://github.com/facebook/rocksdb/pull/7464 Reviewed By: zhichao-cao Differential Revision: D24011309 Pulled By: akankshamahajan15 fbshipit-source-id: d814803f94e8bb8b811ef170d20b22d52c1a3ff2
535 lines
21 KiB
C++
535 lines
21 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#include "table/block_fetcher.h"
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#include "db/table_properties_collector.h"
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#include "env/composite_env_wrapper.h"
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#include "file/file_util.h"
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#include "options/options_helper.h"
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#include "port/port.h"
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#include "port/stack_trace.h"
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#include "table/block_based/binary_search_index_reader.h"
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#include "table/block_based/block_based_table_builder.h"
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#include "table/block_based/block_based_table_factory.h"
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#include "table/block_based/block_based_table_reader.h"
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#include "table/format.h"
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#include "test_util/testharness.h"
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namespace ROCKSDB_NAMESPACE {
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namespace {
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class CountedMemoryAllocator : public MemoryAllocator {
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public:
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const char* Name() const override { return "CountedMemoryAllocator"; }
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void* Allocate(size_t size) override {
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num_allocations_++;
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return static_cast<void*>(new char[size]);
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}
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void Deallocate(void* p) override {
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num_deallocations_++;
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delete[] static_cast<char*>(p);
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}
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int GetNumAllocations() const { return num_allocations_; }
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int GetNumDeallocations() const { return num_deallocations_; }
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private:
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int num_allocations_ = 0;
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int num_deallocations_ = 0;
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};
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struct MemcpyStats {
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int num_stack_buf_memcpy;
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int num_heap_buf_memcpy;
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int num_compressed_buf_memcpy;
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};
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struct BufAllocationStats {
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int num_heap_buf_allocations;
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int num_compressed_buf_allocations;
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};
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struct TestStats {
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MemcpyStats memcpy_stats;
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BufAllocationStats buf_allocation_stats;
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};
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class BlockFetcherTest : public testing::Test {
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public:
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enum class Mode {
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kBufferedRead = 0,
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kBufferedMmap,
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kDirectRead,
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kNumModes,
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};
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// use NumModes as array size to avoid "size of array '...' has non-integral
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// type" errors.
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const static int NumModes = static_cast<int>(Mode::kNumModes);
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protected:
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void SetUp() override {
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SetupSyncPointsToMockDirectIO();
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test_dir_ = test::PerThreadDBPath("block_fetcher_test");
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env_ = Env::Default();
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fs_ = FileSystem::Default();
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ASSERT_OK(fs_->CreateDir(test_dir_, IOOptions(), nullptr));
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}
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void TearDown() override { EXPECT_OK(DestroyDir(env_, test_dir_)); }
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void AssertSameBlock(const std::string& block1, const std::string& block2) {
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ASSERT_EQ(block1, block2);
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}
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// Creates a table with kv pairs (i, i) where i ranges from 0 to 9, inclusive.
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void CreateTable(const std::string& table_name,
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const CompressionType& compression_type) {
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std::unique_ptr<WritableFileWriter> writer;
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NewFileWriter(table_name, &writer);
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// Create table builder.
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ImmutableCFOptions ioptions(options_);
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InternalKeyComparator comparator(options_.comparator);
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ColumnFamilyOptions cf_options(options_);
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MutableCFOptions moptions(cf_options);
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std::vector<std::unique_ptr<IntTblPropCollectorFactory>> factories;
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std::unique_ptr<TableBuilder> table_builder(table_factory_.NewTableBuilder(
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TableBuilderOptions(ioptions, moptions, comparator, &factories,
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compression_type, 0 /* sample_for_compression */,
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CompressionOptions(), false /* skip_filters */,
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kDefaultColumnFamilyName, -1 /* level */),
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0 /* column_family_id */, writer.get()));
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// Build table.
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for (int i = 0; i < 9; i++) {
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std::string key = ToInternalKey(std::to_string(i));
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std::string value = std::to_string(i);
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table_builder->Add(key, value);
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}
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ASSERT_OK(table_builder->Finish());
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}
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void FetchIndexBlock(const std::string& table_name,
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CountedMemoryAllocator* heap_buf_allocator,
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CountedMemoryAllocator* compressed_buf_allocator,
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MemcpyStats* memcpy_stats, BlockContents* index_block,
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std::string* result) {
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FileOptions fopt(options_);
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std::unique_ptr<RandomAccessFileReader> file;
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NewFileReader(table_name, fopt, &file);
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// Get handle of the index block.
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Footer footer;
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ReadFooter(file.get(), &footer);
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const BlockHandle& index_handle = footer.index_handle();
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CompressionType compression_type;
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FetchBlock(file.get(), index_handle, BlockType::kIndex,
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false /* compressed */, false /* do_uncompress */,
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heap_buf_allocator, compressed_buf_allocator, index_block,
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memcpy_stats, &compression_type);
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ASSERT_EQ(compression_type, CompressionType::kNoCompression);
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result->assign(index_block->data.ToString());
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}
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// Fetches the first data block in both direct IO and non-direct IO mode.
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//
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// compressed: whether the data blocks are compressed;
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// do_uncompress: whether the data blocks should be uncompressed on fetching.
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// compression_type: the expected compression type.
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//
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// Expects:
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// Block contents are the same.
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// Bufferr allocation and memory copy statistics are expected.
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void TestFetchDataBlock(
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const std::string& table_name_prefix, bool compressed, bool do_uncompress,
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std::array<TestStats, NumModes> expected_stats_by_mode) {
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for (CompressionType compression_type : GetSupportedCompressions()) {
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bool do_compress = compression_type != kNoCompression;
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if (compressed != do_compress) continue;
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std::string compression_type_str =
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CompressionTypeToString(compression_type);
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std::string table_name = table_name_prefix + compression_type_str;
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CreateTable(table_name, compression_type);
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CompressionType expected_compression_type_after_fetch =
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(compressed && !do_uncompress) ? compression_type : kNoCompression;
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BlockContents blocks[NumModes];
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std::string block_datas[NumModes];
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MemcpyStats memcpy_stats[NumModes];
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CountedMemoryAllocator heap_buf_allocators[NumModes];
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CountedMemoryAllocator compressed_buf_allocators[NumModes];
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for (int i = 0; i < NumModes; ++i) {
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SetMode(static_cast<Mode>(i));
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FetchFirstDataBlock(table_name, compressed, do_uncompress,
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expected_compression_type_after_fetch,
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&heap_buf_allocators[i],
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&compressed_buf_allocators[i], &blocks[i],
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&block_datas[i], &memcpy_stats[i]);
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}
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for (int i = 0; i < NumModes - 1; ++i) {
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AssertSameBlock(block_datas[i], block_datas[i + 1]);
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}
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// Check memcpy and buffer allocation statistics.
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for (int i = 0; i < NumModes; ++i) {
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const TestStats& expected_stats = expected_stats_by_mode[i];
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ASSERT_EQ(memcpy_stats[i].num_stack_buf_memcpy,
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expected_stats.memcpy_stats.num_stack_buf_memcpy);
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ASSERT_EQ(memcpy_stats[i].num_heap_buf_memcpy,
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expected_stats.memcpy_stats.num_heap_buf_memcpy);
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ASSERT_EQ(memcpy_stats[i].num_compressed_buf_memcpy,
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expected_stats.memcpy_stats.num_compressed_buf_memcpy);
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ASSERT_EQ(heap_buf_allocators[i].GetNumAllocations(),
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expected_stats.buf_allocation_stats.num_heap_buf_allocations);
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ASSERT_EQ(
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compressed_buf_allocators[i].GetNumAllocations(),
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expected_stats.buf_allocation_stats.num_compressed_buf_allocations);
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// The allocated buffers are not deallocated until
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// the block content is deleted.
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ASSERT_EQ(heap_buf_allocators[i].GetNumDeallocations(), 0);
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ASSERT_EQ(compressed_buf_allocators[i].GetNumDeallocations(), 0);
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blocks[i].allocation.reset();
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ASSERT_EQ(heap_buf_allocators[i].GetNumDeallocations(),
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expected_stats.buf_allocation_stats.num_heap_buf_allocations);
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ASSERT_EQ(
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compressed_buf_allocators[i].GetNumDeallocations(),
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expected_stats.buf_allocation_stats.num_compressed_buf_allocations);
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}
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}
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}
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void SetMode(Mode mode) {
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switch (mode) {
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case Mode::kBufferedRead:
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options_.use_direct_reads = false;
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options_.allow_mmap_reads = false;
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break;
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case Mode::kBufferedMmap:
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options_.use_direct_reads = false;
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options_.allow_mmap_reads = true;
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break;
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case Mode::kDirectRead:
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options_.use_direct_reads = true;
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options_.allow_mmap_reads = false;
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break;
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case Mode::kNumModes:
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assert(false);
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}
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}
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private:
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std::string test_dir_;
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Env* env_;
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std::shared_ptr<FileSystem> fs_;
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BlockBasedTableFactory table_factory_;
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Options options_;
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std::string Path(const std::string& fname) { return test_dir_ + "/" + fname; }
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void WriteToFile(const std::string& content, const std::string& filename) {
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std::unique_ptr<FSWritableFile> f;
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ASSERT_OK(fs_->NewWritableFile(Path(filename), FileOptions(), &f, nullptr));
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ASSERT_OK(f->Append(content, IOOptions(), nullptr));
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ASSERT_OK(f->Close(IOOptions(), nullptr));
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}
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void NewFileWriter(const std::string& filename,
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std::unique_ptr<WritableFileWriter>* writer) {
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std::string path = Path(filename);
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EnvOptions env_options;
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std::unique_ptr<WritableFile> file;
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ASSERT_OK(env_->NewWritableFile(path, &file, env_options));
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writer->reset(new WritableFileWriter(
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NewLegacyWritableFileWrapper(std::move(file)), path, env_options));
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}
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void NewFileReader(const std::string& filename, const FileOptions& opt,
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std::unique_ptr<RandomAccessFileReader>* reader) {
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std::string path = Path(filename);
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std::unique_ptr<FSRandomAccessFile> f;
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ASSERT_OK(fs_->NewRandomAccessFile(path, opt, &f, nullptr));
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reader->reset(new RandomAccessFileReader(std::move(f), path, env_));
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}
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void NewTableReader(const ImmutableCFOptions& ioptions,
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const FileOptions& foptions,
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const InternalKeyComparator& comparator,
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const std::string& table_name,
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std::unique_ptr<BlockBasedTable>* table) {
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std::unique_ptr<RandomAccessFileReader> file;
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NewFileReader(table_name, foptions, &file);
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uint64_t file_size = 0;
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ASSERT_OK(env_->GetFileSize(Path(table_name), &file_size));
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std::unique_ptr<TableReader> table_reader;
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ReadOptions ro;
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const auto* table_options =
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table_factory_.GetOptions<BlockBasedTableOptions>();
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ASSERT_NE(table_options, nullptr);
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ASSERT_OK(BlockBasedTable::Open(ro, ioptions, EnvOptions(), *table_options,
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comparator, std::move(file), file_size,
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&table_reader));
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table->reset(reinterpret_cast<BlockBasedTable*>(table_reader.release()));
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}
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std::string ToInternalKey(const std::string& key) {
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InternalKey internal_key(key, 0, ValueType::kTypeValue);
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return internal_key.Encode().ToString();
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}
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void ReadFooter(RandomAccessFileReader* file, Footer* footer) {
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uint64_t file_size = 0;
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ASSERT_OK(env_->GetFileSize(file->file_name(), &file_size));
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IOOptions opts;
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ASSERT_OK(ReadFooterFromFile(opts, file, nullptr /* prefetch_buffer */,
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file_size, footer,
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kBlockBasedTableMagicNumber));
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}
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// NOTE: compression_type returns the compression type of the fetched block
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// contents, so if the block is fetched and uncompressed, then it's
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// kNoCompression.
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void FetchBlock(RandomAccessFileReader* file, const BlockHandle& block,
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BlockType block_type, bool compressed, bool do_uncompress,
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MemoryAllocator* heap_buf_allocator,
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MemoryAllocator* compressed_buf_allocator,
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BlockContents* contents, MemcpyStats* stats,
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CompressionType* compresstion_type) {
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ImmutableCFOptions ioptions(options_);
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ReadOptions roptions;
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PersistentCacheOptions persistent_cache_options;
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Footer footer;
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ReadFooter(file, &footer);
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std::unique_ptr<BlockFetcher> fetcher(new BlockFetcher(
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file, nullptr /* prefetch_buffer */, footer, roptions, block, contents,
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ioptions, do_uncompress, compressed, block_type,
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UncompressionDict::GetEmptyDict(), persistent_cache_options,
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heap_buf_allocator, compressed_buf_allocator));
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ASSERT_OK(fetcher->ReadBlockContents());
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stats->num_stack_buf_memcpy = fetcher->TEST_GetNumStackBufMemcpy();
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stats->num_heap_buf_memcpy = fetcher->TEST_GetNumHeapBufMemcpy();
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stats->num_compressed_buf_memcpy =
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fetcher->TEST_GetNumCompressedBufMemcpy();
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*compresstion_type = fetcher->get_compression_type();
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}
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// NOTE: expected_compression_type is the expected compression
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// type of the fetched block content, if the block is uncompressed,
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// then the expected compression type is kNoCompression.
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void FetchFirstDataBlock(const std::string& table_name, bool compressed,
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bool do_uncompress,
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CompressionType expected_compression_type,
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MemoryAllocator* heap_buf_allocator,
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MemoryAllocator* compressed_buf_allocator,
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BlockContents* block, std::string* result,
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MemcpyStats* memcpy_stats) {
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ImmutableCFOptions ioptions(options_);
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InternalKeyComparator comparator(options_.comparator);
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FileOptions foptions(options_);
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// Get block handle for the first data block.
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std::unique_ptr<BlockBasedTable> table;
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NewTableReader(ioptions, foptions, comparator, table_name, &table);
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std::unique_ptr<BlockBasedTable::IndexReader> index_reader;
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ReadOptions ro;
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ASSERT_OK(BinarySearchIndexReader::Create(
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table.get(), ro, nullptr /* prefetch_buffer */, false /* use_cache */,
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false /* prefetch */, false /* pin */, nullptr /* lookup_context */,
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&index_reader));
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std::unique_ptr<InternalIteratorBase<IndexValue>> iter(
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index_reader->NewIterator(
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ReadOptions(), false /* disable_prefix_seek */, nullptr /* iter */,
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nullptr /* get_context */, nullptr /* lookup_context */));
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ASSERT_OK(iter->status());
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iter->SeekToFirst();
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BlockHandle first_block_handle = iter->value().handle;
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// Fetch first data block.
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std::unique_ptr<RandomAccessFileReader> file;
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NewFileReader(table_name, foptions, &file);
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CompressionType compression_type;
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FetchBlock(file.get(), first_block_handle, BlockType::kData, compressed,
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do_uncompress, heap_buf_allocator, compressed_buf_allocator,
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block, memcpy_stats, &compression_type);
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ASSERT_EQ(compression_type, expected_compression_type);
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result->assign(block->data.ToString());
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}
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};
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// Skip the following tests in lite mode since direct I/O is unsupported.
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#ifndef ROCKSDB_LITE
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// Fetch index block under both direct IO and non-direct IO.
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// Expects:
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// the index block contents are the same for both read modes.
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TEST_F(BlockFetcherTest, FetchIndexBlock) {
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for (CompressionType compression : GetSupportedCompressions()) {
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std::string table_name =
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"FetchIndexBlock" + CompressionTypeToString(compression);
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CreateTable(table_name, compression);
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CountedMemoryAllocator allocator;
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MemcpyStats memcpy_stats;
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BlockContents indexes[NumModes];
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std::string index_datas[NumModes];
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for (int i = 0; i < NumModes; ++i) {
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SetMode(static_cast<Mode>(i));
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FetchIndexBlock(table_name, &allocator, &allocator, &memcpy_stats,
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&indexes[i], &index_datas[i]);
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}
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for (int i = 0; i < NumModes - 1; ++i) {
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AssertSameBlock(index_datas[i], index_datas[i + 1]);
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}
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}
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}
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// Data blocks are not compressed,
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// fetch data block under direct IO, mmap IO,and non-direct IO.
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// Expects:
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// 1. in non-direct IO mode, allocate a heap buffer and memcpy the block
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// into the buffer;
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// 2. in direct IO mode, allocate a heap buffer and memcpy from the
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// direct IO buffer to the heap buffer.
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TEST_F(BlockFetcherTest, FetchUncompressedDataBlock) {
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TestStats expected_non_mmap_stats = {
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{
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0 /* num_stack_buf_memcpy */,
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1 /* num_heap_buf_memcpy */,
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0 /* num_compressed_buf_memcpy */,
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},
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{
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1 /* num_heap_buf_allocations */,
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0 /* num_compressed_buf_allocations */,
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}};
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TestStats expected_mmap_stats = {{
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0 /* num_stack_buf_memcpy */,
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0 /* num_heap_buf_memcpy */,
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0 /* num_compressed_buf_memcpy */,
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},
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{
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0 /* num_heap_buf_allocations */,
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0 /* num_compressed_buf_allocations */,
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}};
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std::array<TestStats, NumModes> expected_stats_by_mode{{
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expected_non_mmap_stats /* kBufferedRead */,
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expected_mmap_stats /* kBufferedMmap */,
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expected_non_mmap_stats /* kDirectRead */,
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}};
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TestFetchDataBlock("FetchUncompressedDataBlock", false, false,
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expected_stats_by_mode);
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}
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// Data blocks are compressed,
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// fetch data block under both direct IO and non-direct IO,
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// but do not uncompress.
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// Expects:
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// 1. in non-direct IO mode, allocate a compressed buffer and memcpy the block
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// into the buffer;
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// 2. in direct IO mode, allocate a compressed buffer and memcpy from the
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// direct IO buffer to the compressed buffer.
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TEST_F(BlockFetcherTest, FetchCompressedDataBlock) {
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TestStats expected_non_mmap_stats = {
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{
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0 /* num_stack_buf_memcpy */,
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0 /* num_heap_buf_memcpy */,
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1 /* num_compressed_buf_memcpy */,
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},
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{
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0 /* num_heap_buf_allocations */,
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1 /* num_compressed_buf_allocations */,
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}};
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TestStats expected_mmap_stats = {{
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0 /* num_stack_buf_memcpy */,
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0 /* num_heap_buf_memcpy */,
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0 /* num_compressed_buf_memcpy */,
|
|
},
|
|
{
|
|
0 /* num_heap_buf_allocations */,
|
|
0 /* num_compressed_buf_allocations */,
|
|
}};
|
|
std::array<TestStats, NumModes> expected_stats_by_mode{{
|
|
expected_non_mmap_stats /* kBufferedRead */,
|
|
expected_mmap_stats /* kBufferedMmap */,
|
|
expected_non_mmap_stats /* kDirectRead */,
|
|
}};
|
|
TestFetchDataBlock("FetchCompressedDataBlock", true, false,
|
|
expected_stats_by_mode);
|
|
}
|
|
|
|
// Data blocks are compressed,
|
|
// fetch and uncompress data block under both direct IO and non-direct IO.
|
|
// Expects:
|
|
// 1. in non-direct IO mode, since the block is small, so it's first memcpyed
|
|
// to the stack buffer, then a heap buffer is allocated and the block is
|
|
// uncompressed into the heap.
|
|
// 2. in direct IO mode mode, allocate a heap buffer, then directly uncompress
|
|
// and memcpy from the direct IO buffer to the heap buffer.
|
|
TEST_F(BlockFetcherTest, FetchAndUncompressCompressedDataBlock) {
|
|
TestStats expected_buffered_read_stats = {
|
|
{
|
|
1 /* num_stack_buf_memcpy */,
|
|
1 /* num_heap_buf_memcpy */,
|
|
0 /* num_compressed_buf_memcpy */,
|
|
},
|
|
{
|
|
1 /* num_heap_buf_allocations */,
|
|
0 /* num_compressed_buf_allocations */,
|
|
}};
|
|
TestStats expected_mmap_stats = {{
|
|
0 /* num_stack_buf_memcpy */,
|
|
1 /* num_heap_buf_memcpy */,
|
|
0 /* num_compressed_buf_memcpy */,
|
|
},
|
|
{
|
|
1 /* num_heap_buf_allocations */,
|
|
0 /* num_compressed_buf_allocations */,
|
|
}};
|
|
TestStats expected_direct_read_stats = {
|
|
{
|
|
0 /* num_stack_buf_memcpy */,
|
|
1 /* num_heap_buf_memcpy */,
|
|
0 /* num_compressed_buf_memcpy */,
|
|
},
|
|
{
|
|
1 /* num_heap_buf_allocations */,
|
|
0 /* num_compressed_buf_allocations */,
|
|
}};
|
|
std::array<TestStats, NumModes> expected_stats_by_mode{{
|
|
expected_buffered_read_stats,
|
|
expected_mmap_stats,
|
|
expected_direct_read_stats,
|
|
}};
|
|
TestFetchDataBlock("FetchAndUncompressCompressedDataBlock", true, true,
|
|
expected_stats_by_mode);
|
|
}
|
|
|
|
#endif // ROCKSDB_LITE
|
|
|
|
} // namespace
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
int main(int argc, char** argv) {
|
|
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|