Summary: Blob db rely on base db returning sequence number through write batch after DB::Write(). However after recent changes to the write path, DB::Writ()e no longer return sequence number in some cases. Fixing it by have WriteBatchInternal::InsertInto() always encode sequence number into write batch. Stacking on #2375. Closes https://github.com/facebook/rocksdb/pull/2385 Differential Revision: D5148358 Pulled By: yiwu-arbug fbshipit-source-id: 8bda0aa07b9334ed03ed381548b39d167dc20c33main
Yi Wu
8 years ago
committed by
Facebook Github Bot
parent
51ac91f586
commit
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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// This source code is also licensed under the GPLv2 license found in the
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// COPYING file in the root directory of this source tree.
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#include <memory> |
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#include <thread> |
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#include <vector> |
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#include "db/db_test_util.h" |
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#include "db/write_batch_internal.h" |
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#include "port/stack_trace.h" |
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#include "util/sync_point.h" |
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namespace rocksdb { |
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// Test variations of WriteImpl.
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class DBWriteTest : public DBTestBase, public testing::WithParamInterface<int> { |
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public: |
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DBWriteTest() : DBTestBase("/db_write_test") {} |
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void Open() { DBTestBase::Reopen(GetOptions(GetParam())); } |
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}; |
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// Sequence number should be return through input write batch.
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TEST_P(DBWriteTest, ReturnSeuqneceNumber) { |
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Random rnd(4422); |
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Open(); |
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for (int i = 0; i < 100; i++) { |
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WriteBatch batch; |
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batch.Put("key" + ToString(i), test::RandomHumanReadableString(&rnd, 10)); |
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ASSERT_OK(dbfull()->Write(WriteOptions(), &batch)); |
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ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), |
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WriteBatchInternal::Sequence(&batch)); |
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} |
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} |
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TEST_P(DBWriteTest, ReturnSeuqneceNumberMultiThreaded) { |
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constexpr size_t kThreads = 16; |
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constexpr size_t kNumKeys = 1000; |
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Random rnd(4422); |
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Open(); |
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ASSERT_EQ(0, dbfull()->GetLatestSequenceNumber()); |
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// Check each sequence is used once and only once.
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std::vector<std::atomic_flag> flags(kNumKeys * kThreads + 1); |
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for (size_t i = 0; i < flags.size(); i++) { |
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flags[i].clear(); |
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} |
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auto writer = [&](size_t id) { |
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for (size_t k = 0; k < kNumKeys; k++) { |
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WriteBatch batch; |
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batch.Put("key" + ToString(id) + "-" + ToString(k), |
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test::RandomHumanReadableString(&rnd, 10)); |
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ASSERT_OK(dbfull()->Write(WriteOptions(), &batch)); |
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SequenceNumber sequence = WriteBatchInternal::Sequence(&batch); |
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ASSERT_GT(sequence, 0); |
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ASSERT_LE(sequence, kNumKeys * kThreads); |
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// The sequence isn't consumed by someone else.
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ASSERT_FALSE(flags[sequence].test_and_set()); |
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} |
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}; |
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std::vector<std::thread> threads; |
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for (size_t i = 0; i < kThreads; i++) { |
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threads.emplace_back(writer, i); |
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} |
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for (size_t i = 0; i < kThreads; i++) { |
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threads[i].join(); |
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} |
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} |
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INSTANTIATE_TEST_CASE_P(DBWriteTestInstance, DBWriteTest, |
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testing::Values(DBTestBase::kDefault, |
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DBTestBase::kPipelinedWrite)); |
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} // namespace rocksdb
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int main(int argc, char** argv) { |
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rocksdb::port::InstallStackTraceHandler(); |
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::testing::InitGoogleTest(&argc, argv); |
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return RUN_ALL_TESTS(); |
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} |
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