mirror of https://github.com/facebook/rocksdb.git
Add an internal iterator that can measure the inflow of blobs (#8443)
Summary: Follow-up to https://github.com/facebook/rocksdb/issues/8426 . The patch adds a new kind of `InternalIterator` that wraps another one and passes each key-value encountered to `BlobGarbageMeter` as inflow. This iterator will be used as an input iterator for compactions when the input SSTs reference blob files. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8443 Test Plan: `make check` Reviewed By: jay-zhuang Differential Revision: D29311987 Pulled By: ltamasi fbshipit-source-id: b4493b4c0c0c2e3c2ecc33c8969a5ef02de5d9d8
This commit is contained in:
parent
3f20925dc4
commit
6adc39e1bf
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@ -1124,6 +1124,7 @@ if(WITH_TESTS)
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list(APPEND TESTS
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cache/cache_test.cc
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cache/lru_cache_test.cc
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db/blob/blob_counting_iterator_test.cc
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db/blob/blob_file_addition_test.cc
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db/blob/blob_file_builder_test.cc
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db/blob/blob_file_cache_test.cc
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3
Makefile
3
Makefile
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@ -1827,6 +1827,9 @@ block_cache_trace_analyzer_test: $(OBJ_DIR)/tools/block_cache_analyzer/block_cac
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defer_test: $(OBJ_DIR)/util/defer_test.o $(TEST_LIBRARY) $(LIBRARY)
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$(AM_LINK)
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blob_counting_iterator_test: $(OBJ_DIR)/db/blob/blob_counting_iterator_test.o $(TEST_LIBRARY) $(LIBRARY)
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$(AM_LINK)
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blob_file_addition_test: $(OBJ_DIR)/db/blob/blob_file_addition_test.o $(TEST_LIBRARY) $(LIBRARY)
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$(AM_LINK)
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7
TARGETS
7
TARGETS
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@ -908,6 +908,13 @@ ROCKS_TESTS = [
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[],
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[],
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],
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[
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"blob_counting_iterator_test",
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"db/blob/blob_counting_iterator_test.cc",
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"parallel",
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[],
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[],
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],
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[
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"blob_db_test",
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"utilities/blob_db/blob_db_test.cc",
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@ -0,0 +1,142 @@
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// 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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#pragma once
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#include <cassert>
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#include "db/blob/blob_garbage_meter.h"
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#include "rocksdb/rocksdb_namespace.h"
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#include "rocksdb/status.h"
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#include "table/internal_iterator.h"
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namespace ROCKSDB_NAMESPACE {
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// An internal iterator that passes each key-value encountered to
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// BlobGarbageMeter as inflow in order to measure the total number and size of
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// blobs in the compaction input on a per-blob file basis.
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class BlobCountingIterator : public InternalIterator {
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public:
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BlobCountingIterator(InternalIterator* iter,
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BlobGarbageMeter* blob_garbage_meter)
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: iter_(iter), blob_garbage_meter_(blob_garbage_meter) {
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assert(iter_);
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assert(blob_garbage_meter_);
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UpdateAndCountBlobIfNeeded();
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}
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bool Valid() const override { return iter_->Valid() && status_.ok(); }
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void SeekToFirst() override {
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iter_->SeekToFirst();
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UpdateAndCountBlobIfNeeded();
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}
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void SeekToLast() override {
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iter_->SeekToLast();
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UpdateAndCountBlobIfNeeded();
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}
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void Seek(const Slice& target) override {
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iter_->Seek(target);
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UpdateAndCountBlobIfNeeded();
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}
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void SeekForPrev(const Slice& target) override {
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iter_->SeekForPrev(target);
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UpdateAndCountBlobIfNeeded();
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}
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void Next() override {
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assert(Valid());
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iter_->Next();
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UpdateAndCountBlobIfNeeded();
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}
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bool NextAndGetResult(IterateResult* result) override {
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assert(Valid());
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const bool res = iter_->NextAndGetResult(result);
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UpdateAndCountBlobIfNeeded();
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return res;
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}
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void Prev() override {
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assert(Valid());
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iter_->Prev();
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UpdateAndCountBlobIfNeeded();
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}
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Slice key() const override {
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assert(Valid());
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return iter_->key();
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}
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Slice user_key() const override {
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assert(Valid());
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return iter_->user_key();
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}
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Slice value() const override {
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assert(Valid());
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return iter_->value();
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}
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Status status() const override { return status_; }
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bool PrepareValue() override {
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assert(Valid());
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return iter_->PrepareValue();
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}
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bool MayBeOutOfLowerBound() override {
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assert(Valid());
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return iter_->MayBeOutOfLowerBound();
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}
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IterBoundCheck UpperBoundCheckResult() override {
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assert(Valid());
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return iter_->UpperBoundCheckResult();
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}
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void SetPinnedItersMgr(PinnedIteratorsManager* pinned_iters_mgr) override {
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iter_->SetPinnedItersMgr(pinned_iters_mgr);
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}
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bool IsKeyPinned() const override {
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assert(Valid());
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return iter_->IsKeyPinned();
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}
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bool IsValuePinned() const override {
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assert(Valid());
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return iter_->IsValuePinned();
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}
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Status GetProperty(std::string prop_name, std::string* prop) override {
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return iter_->GetProperty(prop_name, prop);
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}
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private:
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void UpdateAndCountBlobIfNeeded() {
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assert(!iter_->Valid() || iter_->status().ok());
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if (!iter_->Valid()) {
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status_ = iter_->status();
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return;
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}
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status_ = blob_garbage_meter_->ProcessInFlow(key(), value());
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}
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InternalIterator* iter_;
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BlobGarbageMeter* blob_garbage_meter_;
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Status status_;
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};
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} // namespace ROCKSDB_NAMESPACE
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@ -0,0 +1,325 @@
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// 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 "db/blob/blob_counting_iterator.h"
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#include <string>
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#include <vector>
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#include "db/blob/blob_garbage_meter.h"
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#include "db/blob/blob_index.h"
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#include "db/blob/blob_log_format.h"
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#include "db/dbformat.h"
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#include "test_util/testharness.h"
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#include "test_util/testutil.h"
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namespace ROCKSDB_NAMESPACE {
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void CheckInFlow(const BlobGarbageMeter& blob_garbage_meter,
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uint64_t blob_file_number, uint64_t count, uint64_t bytes) {
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const auto& flows = blob_garbage_meter.flows();
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const auto it = flows.find(blob_file_number);
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if (it == flows.end()) {
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ASSERT_EQ(count, 0);
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ASSERT_EQ(bytes, 0);
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return;
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}
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const auto& in = it->second.GetInFlow();
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ASSERT_EQ(in.GetCount(), count);
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ASSERT_EQ(in.GetBytes(), bytes);
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}
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TEST(BlobCountingIteratorTest, CountBlobs) {
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// Note: the input consists of three key-values: two are blob references to
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// different blob files, while the third one is a plain value.
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constexpr char user_key0[] = "key0";
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constexpr char user_key1[] = "key1";
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constexpr char user_key2[] = "key2";
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const std::vector<std::string> keys{
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test::KeyStr(user_key0, 1, kTypeBlobIndex),
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test::KeyStr(user_key1, 2, kTypeBlobIndex),
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test::KeyStr(user_key2, 3, kTypeValue)};
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constexpr uint64_t first_blob_file_number = 4;
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constexpr uint64_t first_offset = 1000;
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constexpr uint64_t first_size = 2000;
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std::string first_blob_index;
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BlobIndex::EncodeBlob(&first_blob_index, first_blob_file_number, first_offset,
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first_size, kNoCompression);
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constexpr uint64_t second_blob_file_number = 6;
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constexpr uint64_t second_offset = 2000;
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constexpr uint64_t second_size = 4000;
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std::string second_blob_index;
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BlobIndex::EncodeBlob(&second_blob_index, second_blob_file_number,
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second_offset, second_size, kNoCompression);
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const std::vector<std::string> values{first_blob_index, second_blob_index,
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"raw_value"};
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assert(keys.size() == values.size());
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test::VectorIterator input(keys, values);
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BlobGarbageMeter blob_garbage_meter;
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BlobCountingIterator blob_counter(&input, &blob_garbage_meter);
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constexpr uint64_t first_expected_bytes =
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first_size +
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BlobLogRecord::CalculateAdjustmentForRecordHeader(sizeof(user_key0) - 1);
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constexpr uint64_t second_expected_bytes =
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second_size +
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BlobLogRecord::CalculateAdjustmentForRecordHeader(sizeof(user_key1) - 1);
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// Call SeekToFirst and iterate forward
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blob_counter.SeekToFirst();
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[0]);
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ASSERT_EQ(blob_counter.user_key(), user_key0);
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ASSERT_EQ(blob_counter.value(), values[0]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 1,
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first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 0, 0);
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blob_counter.Next();
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[1]);
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ASSERT_EQ(blob_counter.user_key(), user_key1);
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ASSERT_EQ(blob_counter.value(), values[1]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 1,
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first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 1,
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second_expected_bytes);
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blob_counter.Next();
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[2]);
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ASSERT_EQ(blob_counter.user_key(), user_key2);
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ASSERT_EQ(blob_counter.value(), values[2]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 1,
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first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 1,
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second_expected_bytes);
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blob_counter.Next();
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ASSERT_FALSE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 1,
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first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 1,
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second_expected_bytes);
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// Do it again using NextAndGetResult
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blob_counter.SeekToFirst();
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[0]);
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ASSERT_EQ(blob_counter.user_key(), user_key0);
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ASSERT_EQ(blob_counter.value(), values[0]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
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2 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 1,
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second_expected_bytes);
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{
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IterateResult result;
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ASSERT_TRUE(blob_counter.NextAndGetResult(&result));
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ASSERT_EQ(result.key, keys[1]);
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ASSERT_EQ(blob_counter.user_key(), user_key1);
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[1]);
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ASSERT_EQ(blob_counter.value(), values[1]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
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2 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 2,
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2 * second_expected_bytes);
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}
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{
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IterateResult result;
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ASSERT_TRUE(blob_counter.NextAndGetResult(&result));
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ASSERT_EQ(result.key, keys[2]);
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ASSERT_EQ(blob_counter.user_key(), user_key2);
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[2]);
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ASSERT_EQ(blob_counter.value(), values[2]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
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2 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 2,
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2 * second_expected_bytes);
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}
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{
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IterateResult result;
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ASSERT_FALSE(blob_counter.NextAndGetResult(&result));
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ASSERT_FALSE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
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2 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 2,
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2 * second_expected_bytes);
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}
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// Call SeekToLast and iterate backward
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blob_counter.SeekToLast();
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[2]);
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ASSERT_EQ(blob_counter.user_key(), user_key2);
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ASSERT_EQ(blob_counter.value(), values[2]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
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2 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 2,
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2 * second_expected_bytes);
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blob_counter.Prev();
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[1]);
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ASSERT_EQ(blob_counter.user_key(), user_key1);
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ASSERT_EQ(blob_counter.value(), values[1]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 2,
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2 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 3,
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3 * second_expected_bytes);
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blob_counter.Prev();
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[0]);
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ASSERT_EQ(blob_counter.user_key(), user_key0);
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ASSERT_EQ(blob_counter.value(), values[0]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 3,
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3 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 3,
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3 * second_expected_bytes);
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blob_counter.Prev();
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ASSERT_FALSE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 3,
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3 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 3,
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3 * second_expected_bytes);
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// Call Seek for all keys (plus one that's greater than all of them)
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blob_counter.Seek(keys[0]);
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[0]);
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ASSERT_EQ(blob_counter.user_key(), user_key0);
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ASSERT_EQ(blob_counter.value(), values[0]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
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4 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 3,
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3 * second_expected_bytes);
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blob_counter.Seek(keys[1]);
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[1]);
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ASSERT_EQ(blob_counter.user_key(), user_key1);
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ASSERT_EQ(blob_counter.value(), values[1]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
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4 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
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4 * second_expected_bytes);
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blob_counter.Seek(keys[2]);
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ASSERT_TRUE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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ASSERT_EQ(blob_counter.key(), keys[2]);
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ASSERT_EQ(blob_counter.user_key(), user_key2);
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ASSERT_EQ(blob_counter.value(), values[2]);
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
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4 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
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4 * second_expected_bytes);
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blob_counter.Seek("zzz");
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ASSERT_FALSE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
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4 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
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4 * second_expected_bytes);
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// Call SeekForPrev for all keys (plus one that's less than all of them)
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blob_counter.SeekForPrev("aaa");
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ASSERT_FALSE(blob_counter.Valid());
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ASSERT_OK(blob_counter.status());
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CheckInFlow(blob_garbage_meter, first_blob_file_number, 4,
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4 * first_expected_bytes);
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CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
|
||||
4 * second_expected_bytes);
|
||||
|
||||
blob_counter.SeekForPrev(keys[0]);
|
||||
ASSERT_TRUE(blob_counter.Valid());
|
||||
ASSERT_OK(blob_counter.status());
|
||||
ASSERT_EQ(blob_counter.key(), keys[0]);
|
||||
ASSERT_EQ(blob_counter.user_key(), user_key0);
|
||||
ASSERT_EQ(blob_counter.value(), values[0]);
|
||||
CheckInFlow(blob_garbage_meter, first_blob_file_number, 5,
|
||||
5 * first_expected_bytes);
|
||||
CheckInFlow(blob_garbage_meter, second_blob_file_number, 4,
|
||||
4 * second_expected_bytes);
|
||||
|
||||
blob_counter.SeekForPrev(keys[1]);
|
||||
ASSERT_TRUE(blob_counter.Valid());
|
||||
ASSERT_OK(blob_counter.status());
|
||||
ASSERT_EQ(blob_counter.key(), keys[1]);
|
||||
ASSERT_EQ(blob_counter.user_key(), user_key1);
|
||||
ASSERT_EQ(blob_counter.value(), values[1]);
|
||||
CheckInFlow(blob_garbage_meter, first_blob_file_number, 5,
|
||||
5 * first_expected_bytes);
|
||||
CheckInFlow(blob_garbage_meter, second_blob_file_number, 5,
|
||||
5 * second_expected_bytes);
|
||||
|
||||
blob_counter.SeekForPrev(keys[2]);
|
||||
ASSERT_TRUE(blob_counter.Valid());
|
||||
ASSERT_OK(blob_counter.status());
|
||||
ASSERT_EQ(blob_counter.key(), keys[2]);
|
||||
ASSERT_EQ(blob_counter.user_key(), user_key2);
|
||||
ASSERT_EQ(blob_counter.value(), values[2]);
|
||||
CheckInFlow(blob_garbage_meter, first_blob_file_number, 5,
|
||||
5 * first_expected_bytes);
|
||||
CheckInFlow(blob_garbage_meter, second_blob_file_number, 5,
|
||||
5 * second_expected_bytes);
|
||||
}
|
||||
|
||||
TEST(BlobCountingIteratorTest, CorruptBlobIndex) {
|
||||
const std::vector<std::string> keys{
|
||||
test::KeyStr("user_key", 1, kTypeBlobIndex)};
|
||||
const std::vector<std::string> values{"i_am_not_a_blob_index"};
|
||||
|
||||
assert(keys.size() == values.size());
|
||||
|
||||
test::VectorIterator input(keys, values);
|
||||
BlobGarbageMeter blob_garbage_meter;
|
||||
|
||||
BlobCountingIterator blob_counter(&input, &blob_garbage_meter);
|
||||
|
||||
blob_counter.SeekToFirst();
|
||||
ASSERT_FALSE(blob_counter.Valid());
|
||||
ASSERT_NOK(blob_counter.status());
|
||||
}
|
||||
|
||||
} // namespace ROCKSDB_NAMESPACE
|
||||
|
||||
int main(int argc, char** argv) {
|
||||
::testing::InitGoogleTest(&argc, argv);
|
||||
return RUN_ALL_TESTS();
|
||||
}
|
Loading…
Reference in New Issue