- 27 11月, 2019 4 次提交
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由 Patrick Double 提交于
Summary: Add the jni library for musl-libc, specifically for incorporating into Alpine based docker images. The classifier is `musl64`. I have signed the CLA electronically. Pull Request resolved: https://github.com/facebook/rocksdb/pull/3143 Differential Revision: D18719372 fbshipit-source-id: 6189d149310b6436d6def7d808566b0234b23313
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由 Adam Retter 提交于
Summary: **NOTE**: This also needs to be back-ported to be 6.4.6 Fix a regression introduced in f2bf0b2d by https://github.com/facebook/rocksdb/pull/5674 whereby the compiled library would get the wrong name on PPC64LE platforms. On PPC64LE, the regression caused the library to be named `librocksdbjni-linux64.so` instead of `librocksdbjni-linux-ppc64le.so`. This PR corrects the name back to `librocksdbjni-linux-ppc64le.so` and also corrects the ordering of conditional arguments in the Makefile to match the expected order as defined in the documentation for Make. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6080 Differential Revision: D18710351 fbshipit-source-id: d4db87ef378263b57de7f9edce1b7d15644cf9de
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由 Adam Retter 提交于
Summary: * We can reuse downloaded 3rd-party libraries * We can isolate the build to a Docker volume. This is useful for investigating failed builds, as we can examine the volume by assigning it a name during the build. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6079 Differential Revision: D18710263 fbshipit-source-id: 93f456ba44b49e48941c43b0c4d53995ecc1f404
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由 Adam Retter 提交于
Summary: * LZ4 1.8.3 -> 1.9.2 * ZSTD 1.4.0 -> 1.4.4 Pull Request resolved: https://github.com/facebook/rocksdb/pull/6084 Differential Revision: D18710224 fbshipit-source-id: a461ef19a473d3480acdc027f627ec3048730692
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- 15 11月, 2019 1 次提交
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由 Peter Dillinger 提交于
Summary: Had complications with LITE build and valgrind test. Reverts/fixes small parts of PR https://github.com/facebook/rocksdb/issues/6007 Pull Request resolved: https://github.com/facebook/rocksdb/pull/6036 Test Plan: make LITE=1 all check and ROCKSDB_VALGRIND_RUN=1 DISABLE_JEMALLOC=1 make -j24 db_bloom_filter_test && ROCKSDB_VALGRIND_RUN=1 DISABLE_JEMALLOC=1 ./db_bloom_filter_test Differential Revision: D18512238 Pulled By: pdillinger fbshipit-source-id: 37213cf0d309edf11c483fb4b2fb6c02c2cf2b28
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- 14 11月, 2019 1 次提交
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由 Peter Dillinger 提交于
Summary: Adds an improved, replacement Bloom filter implementation (FastLocalBloom) for full and partitioned filters in the block-based table. This replacement is faster and more accurate, especially for high bits per key or millions of keys in a single filter. Speed The improved speed, at least on recent x86_64, comes from * Using fastrange instead of modulo (%) * Using our new hash function (XXH3 preview, added in a previous commit), which is much faster for large keys and only *slightly* slower on keys around 12 bytes if hashing the same size many thousands of times in a row. * Optimizing the Bloom filter queries with AVX2 SIMD operations. (Added AVX2 to the USE_SSE=1 build.) Careful design was required to support (a) SIMD-optimized queries, (b) compatible non-SIMD code that's simple and efficient, (c) flexible choice of number of probes, and (d) essentially maximized accuracy for a cache-local Bloom filter. Probes are made eight at a time, so any number of probes up to 8 is the same speed, then up to 16, etc. * Prefetching cache lines when building the filter. Although this optimization could be applied to the old structure as well, it seems to balance out the small added cost of accumulating 64 bit hashes for adding to the filter rather than 32 bit hashes. Here's nominal speed data from filter_bench (200MB in filters, about 10k keys each, 10 bits filter data / key, 6 probes, avg key size 24 bytes, includes hashing time) on Skylake DE (relatively low clock speed): $ ./filter_bench -quick -impl=2 -net_includes_hashing # New Bloom filter Build avg ns/key: 47.7135 Mixed inside/outside queries... Single filter net ns/op: 26.2825 Random filter net ns/op: 150.459 Average FP rate %: 0.954651 $ ./filter_bench -quick -impl=0 -net_includes_hashing # Old Bloom filter Build avg ns/key: 47.2245 Mixed inside/outside queries... Single filter net ns/op: 63.2978 Random filter net ns/op: 188.038 Average FP rate %: 1.13823 Similar build time but dramatically faster query times on hot data (63 ns to 26 ns), and somewhat faster on stale data (188 ns to 150 ns). Performance differences on batched and skewed query loads are between these extremes as expected. The only other interesting thing about speed is "inside" (query key was added to filter) vs. "outside" (query key was not added to filter) query times. The non-SIMD implementations are substantially slower when most queries are "outside" vs. "inside". This goes against what one might expect or would have observed years ago, as "outside" queries only need about two probes on average, due to short-circuiting, while "inside" always have num_probes (say 6). The problem is probably the nastily unpredictable branch. The SIMD implementation has few branches (very predictable) and has pretty consistent running time regardless of query outcome. Accuracy The generally improved accuracy (re: Issue https://github.com/facebook/rocksdb/issues/5857) comes from a better design for probing indices within a cache line (re: Issue https://github.com/facebook/rocksdb/issues/4120) and improved accuracy for millions of keys in a single filter from using a 64-bit hash function (XXH3p). Design details in code comments. Accuracy data (generalizes, except old impl gets worse with millions of keys): Memory bits per key: FP rate percent old impl -> FP rate percent new impl 6: 5.70953 -> 5.69888 8: 2.45766 -> 2.29709 10: 1.13977 -> 0.959254 12: 0.662498 -> 0.411593 16: 0.353023 -> 0.0873754 24: 0.261552 -> 0.0060971 50: 0.225453 -> ~0.00003 (less than 1 in a million queries are FP) Fixes https://github.com/facebook/rocksdb/issues/5857 Fixes https://github.com/facebook/rocksdb/issues/4120 Unlike the old implementation, this implementation has a fixed cache line size (64 bytes). At 10 bits per key, the accuracy of this new implementation is very close to the old implementation with 128-byte cache line size. If there's sufficient demand, this implementation could be generalized. Compatibility Although old releases would see the new structure as corrupt filter data and read the table as if there's no filter, we've decided only to enable the new Bloom filter with new format_version=5. This provides a smooth path for automatic adoption over time, with an option for early opt-in. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6007 Test Plan: filter_bench has been used thoroughly to validate speed, accuracy, and correctness. Unit tests have been carefully updated to exercise new and old implementations, as well as the logic to select an implementation based on context (format_version). Differential Revision: D18294749 Pulled By: pdillinger fbshipit-source-id: d44c9db3696e4d0a17caaec47075b7755c262c5f
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- 08 11月, 2019 1 次提交
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由 Yun Tang 提交于
Summary: From bzip2's official [download page](http://www.bzip.org/downloads.html), we could download it from sourceforge. This source would be more credible than previous web archive. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5995 Differential Revision: D18377662 fbshipit-source-id: e8353f83d5d6ea6067f78208b7bfb7f0d5b49c05
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- 22 10月, 2019 1 次提交
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由 Yanqin Jin 提交于
Summary: include db_stress_tool in rocksdb tools lib Test Plan (on devserver): ``` $make db_stress $./db_stress $make all && make check ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/5950 Differential Revision: D18044399 Pulled By: riversand963 fbshipit-source-id: 895585abbbdfd8b954965921dba4b1400b7af1b1
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- 19 10月, 2019 1 次提交
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由 Yanqin Jin 提交于
Summary: expose db stress test by providing db_stress_tool.h in public header. This PR does the following: - adds a new header, db_stress_tool.h, in include/rocksdb/ - renames db_stress.cc to db_stress_tool.cc - adds a db_stress.cc which simply invokes a test function. - update Makefile accordingly. Test Plan (dev server): ``` make db_stress ./db_stress ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/5937 Differential Revision: D17997647 Pulled By: riversand963 fbshipit-source-id: 1a8d9994f89ce198935566756947c518f0052410
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- 08 10月, 2019 1 次提交
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由 Peter Dillinger 提交于
Summary: Example: using the tool before and after PR https://github.com/facebook/rocksdb/issues/5784 shows that the refactoring, presumed performance-neutral, actually sped up SST filters by about 3% to 8% (repeatable result): Before: - Dry run ns/op: 22.4725 - Single filter ns/op: 51.1078 - Random filter ns/op: 120.133 After: + Dry run ns/op: 22.2301 + Single filter run ns/op: 47.4313 + Random filter ns/op: 115.9 Only tests filters for the block-based table (full filters and partitioned filters - same implementation; not block-based filters), which seems to be the recommended format/implementation. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5825 Differential Revision: D17804987 Pulled By: pdillinger fbshipit-source-id: 0f18a9c254c57f7866030d03e7fa4ba503bac3c5
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- 19 9月, 2019 2 次提交
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由 Yanqin Jin 提交于
Summary: Make DeleteFileTest inherit DBTestBase to avoid code duplication. Test Plan (on devserver) ``` $make deletefile_test $./deletefile_test ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/5822 Differential Revision: D17456750 Pulled By: riversand963 fbshipit-source-id: 224e97967da7b98838a98981cd5095d3230a814f
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由 Yanqin Jin 提交于
Summary: Make class ObsoleteFilesTest inherit from DBTestBase. Test plan (on devserver): ``` $COMPILE_WITH_ASAN=1 make obsolete_files_test $./obsolete_files_test ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/5820 Differential Revision: D17452348 Pulled By: riversand963 fbshipit-source-id: b09f4581a18022ca2bfd79f2836c0bf7083f5f25
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- 17 9月, 2019 2 次提交
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由 Peter Dillinger 提交于
Summary: Refactoring to consolidate implementation details of legacy Bloom filters. This helps to organize and document some related, obscure code. Also added make/cpp var TEST_CACHE_LINE_SIZE so that it's easy to compile and run unit tests for non-native cache line size. (Fixed a related test failure in db_properties_test.) Pull Request resolved: https://github.com/facebook/rocksdb/pull/5784 Test Plan: make check, including Recently added Bloom schema unit tests (in ./plain_table_db_test && ./bloom_test), and including with TEST_CACHE_LINE_SIZE=128U and TEST_CACHE_LINE_SIZE=256U. Tested the schema tests with temporary fault injection into new implementations. Some performance testing with modified unit tests suggest a small to moderate improvement in speed. Differential Revision: D17381384 Pulled By: pdillinger fbshipit-source-id: ee42586da996798910fc45ac0b6289147f16d8df
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由 Peter Dillinger 提交于
Summary: This will allow us to fix history by having the code changes for PR#5784 properly attributed to it. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5810 Differential Revision: D17400231 Pulled By: pdillinger fbshipit-source-id: 2da8b1cdf2533cfedb35b5526eadefb38c291f09
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- 14 9月, 2019 1 次提交
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由 Peter Dillinger 提交于
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/5780 Test Plan: existing plain table unit test Differential Revision: D17368629 Pulled By: pdillinger fbshipit-source-id: f25409cdc2f39ebe8d5cbb599cf820270e6b5d26
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- 10 9月, 2019 1 次提交
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由 Wilfried Goesgens 提交于
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/5332 Differential Revision: D17242232 fbshipit-source-id: c0d4646556a1335e51ac7382b986ca7f6ced7b64
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- 05 9月, 2019 1 次提交
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由 ENDOH takanao 提交于
Summary: Hi! guys, I got errors on the ARM machine. before: ```console $ make static_lib ... g++: error: unrecognized argument in option '-march=armv8-a+crc+crypto' g++: note: valid arguments to '-march=' are: armv2 armv2a armv3 armv3m armv4 armv4t armv5 armv5e armv5t armv5te armv6 armv6-m armv6j armv6k armv6kz armv6s-m armv6t2 armv6z armv6zk armv7 armv7-a armv7-m armv7-r armv7e-m armv7ve armv8-a armv8-a+crc armv8.1-a armv8.1-a+crc iwmmxt iwmmxt2 native ``` Thanks! Pull Request resolved: https://github.com/facebook/rocksdb/pull/5766 Differential Revision: D17191117 fbshipit-source-id: 7a61e3a2a4a06f37faeb8429bd7314da54ec5868
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- 23 8月, 2019 1 次提交
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由 sdong 提交于
Summary: AtomicFlushStressTest is a powerful test, but right now we only run it for atomic_flush=true + disable_wal=true. We further extend it to the case where atomic_flush=false + disable_wal = false. All the workload generation and validation can stay the same. Atomic flush crash test is also changed to switch between the two test scenarios. It makes the name "atomic flush crash test" out of sync from what it really does. We leave it as it is to avoid troubles with continous test set-up. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5729 Test Plan: Run "CRASH_TEST_KILL_ODD=188 TEST_TMPDIR=/dev/shm/ USE_CLANG=1 make whitebox_crash_test_with_atomic_flush", observe the settings used and see it passed. Differential Revision: D16969791 fbshipit-source-id: 56e37487000ae631e31b0100acd7bdc441c04163
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- 17 8月, 2019 2 次提交
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由 sdong 提交于
Summary: Right now VerifyChecksum() doesn't do read-ahead. In some use cases, users won't be able to achieve good performance. With this change, by default, RocksDB will do a default readahead, and users will be able to overwrite the readahead size by passing in a ReadOptions. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5713 Test Plan: Add a new unit test. Differential Revision: D16860874 fbshipit-source-id: 0cff0fe79ac855d3d068e6ccd770770854a68413
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由 Adam Retter 提交于
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/5674 Differential Revision: D16870338 fbshipit-source-id: c8dac644b1479fa734b491f3a8d50151772290f7
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- 15 8月, 2019 1 次提交
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由 Aaryaman Sagar 提交于
Summary: TSAN was not able to correctly instrument atomic bts and btr instructions, so when TSAN is enabled implement those with std::atomic::fetch_or and std::atomic::fetch_and. Also disable tests that fail on TSAN with false negatives (we know these are false negatives because this other verifiably correct program fails with the same TSAN error <link>) ``` make clean TEST_TMPDIR=/dev/shm/rocksdb OPT=-g COMPILE_WITH_TSAN=1 make J=1 -j56 folly_synchronization_distributed_mutex_test ``` This is the code that fails with the same false-negative with TSAN ``` namespace { class ExceptionWithConstructionTrack : public std::exception { public: explicit ExceptionWithConstructionTrack(int id) : id_{folly::to<std::string>(id)}, constructionTrack_{id} {} const char* what() const noexcept override { return id_.c_str(); } private: std::string id_; TestConstruction constructionTrack_; }; template <typename Storage, typename Atomic> void transferCurrentException(Storage& storage, Atomic& produced) { assert(std::current_exception()); new (&storage) std::exception_ptr(std::current_exception()); produced->store(true, std::memory_order_release); } void concurrentExceptionPropagationStress( int numThreads, std::chrono::milliseconds milliseconds) { auto&& stop = std::atomic<bool>{false}; auto&& exceptions = std::vector<std::aligned_storage<48, 8>::type>{}; auto&& produced = std::vector<std::unique_ptr<std::atomic<bool>>>{}; auto&& consumed = std::vector<std::unique_ptr<std::atomic<bool>>>{}; auto&& consumers = std::vector<std::thread>{}; for (auto i = 0; i < numThreads; ++i) { produced.emplace_back(new std::atomic<bool>{false}); consumed.emplace_back(new std::atomic<bool>{false}); exceptions.push_back({}); } auto producer = std::thread{[&]() { auto counter = std::vector<int>(numThreads, 0); for (auto i = 0; true; i = ((i + 1) % numThreads)) { try { throw ExceptionWithConstructionTrack{counter.at(i)++}; } catch (...) { transferCurrentException(exceptions.at(i), produced.at(i)); } while (!consumed.at(i)->load(std::memory_order_acquire)) { if (stop.load(std::memory_order_acquire)) { return; } } consumed.at(i)->store(false, std::memory_order_release); } }}; for (auto i = 0; i < numThreads; ++i) { consumers.emplace_back([&, i]() { auto counter = 0; while (true) { while (!produced.at(i)->load(std::memory_order_acquire)) { if (stop.load(std::memory_order_acquire)) { return; } } produced.at(i)->store(false, std::memory_order_release); try { auto storage = &exceptions.at(i); auto exc = folly::launder( reinterpret_cast<std::exception_ptr*>(storage)); auto copy = std::move(*exc); exc->std::exception_ptr::~exception_ptr(); std::rethrow_exception(std::move(copy)); } catch (std::exception& exc) { auto value = std::stoi(exc.what()); EXPECT_EQ(value, counter++); } consumed.at(i)->store(true, std::memory_order_release); } }); } std::this_thread::sleep_for(milliseconds); stop.store(true); producer.join(); for (auto& thread : consumers) { thread.join(); } } } // namespace ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/5684 Differential Revision: D16746077 Pulled By: miasantreble fbshipit-source-id: 8af88dcf9161c05daec1a76290f577918638f79d
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- 08 8月, 2019 1 次提交
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由 Aaryaman Sagar 提交于
Summary: This ports `folly::DistributedMutex` into RocksDB. The PR includes everything else needed to compile and use DistributedMutex as a component within folly. Most files are unchanged except for some portability stuff and includes. For now, I've put this under `rocksdb/third-party`, but if there is a better folder to put this under, let me know. I also am not sure how or where to put unit tests for third-party stuff like this. It seems like gtest is included already, but I need to link with it from another third-party folder. This also includes some other common components from folly - folly/Optional - folly/ScopeGuard (In particular `SCOPE_EXIT`) - folly/synchronization/ParkingLot (A portable futex-like interface) - folly/synchronization/AtomicNotification (The standard C++ interface for futexes) - folly/Indestructible (For singletons that don't get destroyed without allocations) Pull Request resolved: https://github.com/facebook/rocksdb/pull/5642 Differential Revision: D16544439 fbshipit-source-id: 179b98b5dcddc3075926d31a30f92fd064245731
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- 07 8月, 2019 1 次提交
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由 Vijay Nadimpalli 提交于
Summary: This is a new API added to db.h to allow for fetching all merge operands associated with a Key. The main motivation for this API is to support use cases where doing a full online merge is not necessary as it is performance sensitive. Example use-cases: 1. Update subset of columns and read subset of columns - Imagine a SQL Table, a row is encoded as a K/V pair (as it is done in MyRocks). If there are many columns and users only updated one of them, we can use merge operator to reduce write amplification. While users only read one or two columns in the read query, this feature can avoid a full merging of the whole row, and save some CPU. 2. Updating very few attributes in a value which is a JSON-like document - Updating one attribute can be done efficiently using merge operator, while reading back one attribute can be done more efficiently if we don't need to do a full merge. ---------------------------------------------------------------------------------------------------- API : Status GetMergeOperands( const ReadOptions& options, ColumnFamilyHandle* column_family, const Slice& key, PinnableSlice* merge_operands, GetMergeOperandsOptions* get_merge_operands_options, int* number_of_operands) Example usage : int size = 100; int number_of_operands = 0; std::vector<PinnableSlice> values(size); GetMergeOperandsOptions merge_operands_info; db_->GetMergeOperands(ReadOptions(), db_->DefaultColumnFamily(), "k1", values.data(), merge_operands_info, &number_of_operands); Description : Returns all the merge operands corresponding to the key. If the number of merge operands in DB is greater than merge_operands_options.expected_max_number_of_operands no merge operands are returned and status is Incomplete. Merge operands returned are in the order of insertion. merge_operands-> Points to an array of at-least merge_operands_options.expected_max_number_of_operands and the caller is responsible for allocating it. If the status returned is Incomplete then number_of_operands will contain the total number of merge operands found in DB for key. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5604 Test Plan: Added unit test and perf test in db_bench that can be run using the command: ./db_bench -benchmarks=getmergeoperands --merge_operator=sortlist Differential Revision: D16657366 Pulled By: vjnadimpalli fbshipit-source-id: 0faadd752351745224ee12d4ae9ef3cb529951bf
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- 06 8月, 2019 1 次提交
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由 Yanqin Jin 提交于
Summary: If a test is one of parallel tests, then it should also be one of the 'tests'. Otherwise, `make all` won't build the binaries. For examle, ``` $COMPILE_WITH_ASAN=1 make -j32 all ``` Then if you do ``` $make check ``` The second command will invoke the compilation and building for db_bloom_test and file_reader_writer_test **without** the `COMPILE_WITH_ASAN=1`, causing the command to fail. Test plan (on devserver): ``` $make -j32 all ``` Verify all binaries are built so that `make check` won't have to compile any thing. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5672 Differential Revision: D16655834 Pulled By: riversand963 fbshipit-source-id: 050131412b5313496f85ae3deeeeb8d28af75746
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- 27 7月, 2019 3 次提交
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由 haoyuhuang 提交于
Summary: This PR implements cache eviction using reinforcement learning. It includes two implementations: 1. An implementation of Thompson Sampling for the Bernoulli Bandit [1]. 2. An implementation of LinUCB with disjoint linear models [2]. The idea is that a cache uses multiple eviction policies, e.g., MRU, LRU, and LFU. The cache learns which eviction policy is the best and uses it upon a cache miss. Thompson Sampling is contextless and does not include any features. LinUCB includes features such as level, block type, caller, column family id to decide which eviction policy to use. [1] Daniel J. Russo, Benjamin Van Roy, Abbas Kazerouni, Ian Osband, and Zheng Wen. 2018. A Tutorial on Thompson Sampling. Found. Trends Mach. Learn. 11, 1 (July 2018), 1-96. DOI: https://doi.org/10.1561/2200000070 [2] Lihong Li, Wei Chu, John Langford, and Robert E. Schapire. 2010. A contextual-bandit approach to personalized news article recommendation. In Proceedings of the 19th international conference on World wide web (WWW '10). ACM, New York, NY, USA, 661-670. DOI=http://dx.doi.org/10.1145/1772690.1772758 Pull Request resolved: https://github.com/facebook/rocksdb/pull/5610 Differential Revision: D16435067 Pulled By: HaoyuHuang fbshipit-source-id: 6549239ae14115c01cb1e70548af9e46d8dc21bb
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由 Levi Tamasi 提交于
Summary: This test frequently times out under TSAN; parallelizing it should fix this issue. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5632 Test Plan: make check buck test mode/dev-tsan internal_repo_rocksdb/repo:db_bloom_filter_test Differential Revision: D16519399 Pulled By: ltamasi fbshipit-source-id: 66e05a644d6f79c6d544255ffcf6de195d2d62fe
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由 Yanqin Jin 提交于
Summary: current `clean` target in Makefile does not remove parallel test binaries. Fix this. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5629 Test Plan: (on devserver) Take file_reader_writer_test for instance. ``` $make -j32 file_reader_writer_test $make clean ``` Verify that binary file 'file_reader_writer_test' is delete by `make clean`. Differential Revision: D16513176 Pulled By: riversand963 fbshipit-source-id: 70acb9f56c928a494964121b86aacc0090f31ff6
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- 24 7月, 2019 1 次提交
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由 anand76 提交于
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/5608 Test Plan: make check buck test mode/dev-tsan internal_repo_rocksdb/repo:file_reader_writer_test -- --run-disabled Differential Revision: D16441796 Pulled By: anand1976 fbshipit-source-id: afbb88a9fcb1c0ba22215118767e8eab3d1d6a4a
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- 18 7月, 2019 2 次提交
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由 Venki Pallipadi 提交于
Summary: Refresh of the earlier change here - https://github.com/facebook/rocksdb/issues/5135 This is a review request for code change needed for - https://github.com/facebook/rocksdb/issues/3469 "Add support for taking snapshot of a column family and creating column family from a given CF snapshot" We have an implementation for this that we have been testing internally. We have two new APIs that together provide this functionality. (1) ExportColumnFamily() - This API is modelled after CreateCheckpoint() as below. // Exports all live SST files of a specified Column Family onto export_dir, // returning SST files information in metadata. // - SST files will be created as hard links when the directory specified // is in the same partition as the db directory, copied otherwise. // - export_dir should not already exist and will be created by this API. // - Always triggers a flush. virtual Status ExportColumnFamily(ColumnFamilyHandle* handle, const std::string& export_dir, ExportImportFilesMetaData** metadata); Internally, the API will DisableFileDeletions(), GetColumnFamilyMetaData(), Parse through metadata, creating links/copies of all the sst files, EnableFileDeletions() and complete the call by returning the list of file metadata. (2) CreateColumnFamilyWithImport() - This API is modeled after IngestExternalFile(), but invoked only during a CF creation as below. // CreateColumnFamilyWithImport() will create a new column family with // column_family_name and import external SST files specified in metadata into // this column family. // (1) External SST files can be created using SstFileWriter. // (2) External SST files can be exported from a particular column family in // an existing DB. // Option in import_options specifies whether the external files are copied or // moved (default is copy). When option specifies copy, managing files at // external_file_path is caller's responsibility. When option specifies a // move, the call ensures that the specified files at external_file_path are // deleted on successful return and files are not modified on any error // return. // On error return, column family handle returned will be nullptr. // ColumnFamily will be present on successful return and will not be present // on error return. ColumnFamily may be present on any crash during this call. virtual Status CreateColumnFamilyWithImport( const ColumnFamilyOptions& options, const std::string& column_family_name, const ImportColumnFamilyOptions& import_options, const ExportImportFilesMetaData& metadata, ColumnFamilyHandle** handle); Internally, this API creates a new CF, parses all the sst files and adds it to the specified column family, at the same level and with same sequence number as in the metadata. Also performs safety checks with respect to overlaps between the sst files being imported. If incoming sequence number is higher than current local sequence number, local sequence number is updated to reflect this. Note, as the sst files is are being moved across Column Families, Column Family name in sst file will no longer match the actual column family on destination DB. The API does not modify Column Family name or id in the sst files being imported. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5495 Differential Revision: D16018881 fbshipit-source-id: 9ae2251025d5916d35a9fc4ea4d6707f6be16ff9
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由 Yuqi Gu 提交于
Summary: Crc32c Parallel computation optimization: Algorithm comes from Intel whitepaper: [crc-iscsi-polynomial-crc32-instruction-paper](https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/crc-iscsi-polynomial-crc32-instruction-paper.pdf) Input data is divided into three equal-sized blocks Three parallel blocks (crc0, crc1, crc2) for 1024 Bytes One Block: 42(BLK_LENGTH) * 8(step length: crc32c_u64) bytes 1. crc32c_test: ``` [==========] Running 4 tests from 1 test case. [----------] Global test environment set-up. [----------] 4 tests from CRC [ RUN ] CRC.StandardResults [ OK ] CRC.StandardResults (1 ms) [ RUN ] CRC.Values [ OK ] CRC.Values (0 ms) [ RUN ] CRC.Extend [ OK ] CRC.Extend (0 ms) [ RUN ] CRC.Mask [ OK ] CRC.Mask (0 ms) [----------] 4 tests from CRC (1 ms total) [----------] Global test environment tear-down [==========] 4 tests from 1 test case ran. (1 ms total) [ PASSED ] 4 tests. ``` 2. RocksDB benchmark: db_bench --benchmarks="crc32c" ``` Linear Arm crc32c: crc32c: 1.005 micros/op 995133 ops/sec; 3887.2 MB/s (4096 per op) ``` ``` Parallel optimization with Armv8 crypto extension: crc32c: 0.419 micros/op 2385078 ops/sec; 9316.7 MB/s (4096 per op) ``` It gets ~2.4x speedup compared to linear Arm crc32c instructions. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5494 Differential Revision: D16340806 fbshipit-source-id: 95dae9a5b646fd20a8303671d82f17b2e162e945
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- 12 7月, 2019 1 次提交
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由 haoyuhuang 提交于
Summary: This PR adds a ghost cache for admission control. Specifically, it admits an entry on its second access. It also adds a hybrid row-block cache that caches the referenced key-value pairs of a Get/MultiGet request instead of its blocks. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5534 Test Plan: make clean && COMPILE_WITH_ASAN=1 make check -j32 Differential Revision: D16101124 Pulled By: HaoyuHuang fbshipit-source-id: b99edda6418a888e94eb40f71ece45d375e234b1
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- 10 7月, 2019 1 次提交
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由 ggaurav28 提交于
Summary: Current PosixLogger performs IO operations using posix calls. Thus the current implementation will not work for non-posix env. Created a new logger class EnvLogger that uses env specific WritableFileWriter for IO operations. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5491 Test Plan: make check Differential Revision: D15909002 Pulled By: ggaurav28 fbshipit-source-id: 13a8105176e8e42db0c59798d48cb6a0dbccc965
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- 19 6月, 2019 1 次提交
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由 Adam Retter 提交于
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/5228 Differential Revision: D15880451 Pulled By: sagar0 fbshipit-source-id: 84da6f42cac15367d95bffa5336ebd002e7c3308
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- 18 6月, 2019 2 次提交
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由 haoyuhuang 提交于
Summary: This PR adds a BlockCacheTraceSimulator that reports the miss ratios given different cache configurations. A cache configuration contains "cache_name,num_shard_bits,cache_capacities". For example, "lru, 1, 1K, 2K, 4M, 4G". When we replay the trace, we also perform lookups and inserts on the simulated caches. In the end, it reports the miss ratio for each tuple <cache_name, num_shard_bits, cache_capacity> in a output file. This PR also adds a main source block_cache_trace_analyzer so that we can run the analyzer in command line. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5449 Test Plan: Added tests for block_cache_trace_analyzer. COMPILE_WITH_ASAN=1 make check -j32. Differential Revision: D15797073 Pulled By: HaoyuHuang fbshipit-source-id: aef0c5c2e7938f3e8b6a10d4a6a50e6928ecf408
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由 Zhongyi Xie 提交于
Summary: This PR continues the work in https://github.com/facebook/rocksdb/pull/4748 and https://github.com/facebook/rocksdb/pull/4535 by adding a new DBOption `persist_stats_to_disk` which instructs RocksDB to persist stats history to RocksDB itself. When statistics is enabled, and both options `stats_persist_period_sec` and `persist_stats_to_disk` are set, RocksDB will periodically write stats to a built-in column family in the following form: key -> (timestamp in microseconds)#(stats name), value -> stats value. The existing API `GetStatsHistory` will detect the current value of `persist_stats_to_disk` and either read from in-memory data structure or from the hidden column family on disk. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5046 Differential Revision: D15863138 Pulled By: miasantreble fbshipit-source-id: bb82abdb3f2ca581aa42531734ac799f113e931b
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- 14 6月, 2019 1 次提交
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由 Patrick Zhang 提交于
Summary: Verified with an Ampere Computing eMAG aarch64 system. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5258 Differential Revision: D15807309 Pulled By: maysamyabandeh fbshipit-source-id: ab85d2fd3fe40e6094430ab0eba557b1e979510d
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- 12 6月, 2019 1 次提交
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由 haoyuhuang 提交于
Summary: This PR contains the first commit for block cache trace analyzer. It reads a block cache trace file and prints statistics of the traces. We will extend this class to provide more functionalities. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5425 Differential Revision: D15709580 Pulled By: HaoyuHuang fbshipit-source-id: 2f43bd2311f460ab569880819d95eeae217c20bb
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- 07 6月, 2019 1 次提交
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由 haoyuhuang 提交于
Summary: This PR adds a help class block cache tracer to read/write block cache accesses. It uses the trace reader/writer to perform this task. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5410 Differential Revision: D15612843 Pulled By: HaoyuHuang fbshipit-source-id: f30fd1e1524355ca87db5d533a5c086728b141ea
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- 01 6月, 2019 2 次提交
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由 Siying Dong 提交于
Summary: Many logging related source files are under util/. It will be more structured if they are together. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5387 Differential Revision: D15579036 Pulled By: siying fbshipit-source-id: 3850134ed50b8c0bb40a0c8ae1f184fa4081303f
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由 Vijay Nadimpalli 提交于
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/5390 Differential Revision: D15579388 Pulled By: vjnadimpalli fbshipit-source-id: 5bfc95e31554b8ff05b97b76d6534113f527f366
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