- 09 8月, 2013 2 次提交
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由 Haobo Xu 提交于
Summary: Currently, VersionEdit::DebugString always display internal keys in the original ascii format. This could cause manifest dump to be truncated if internal keys contain special charactors (like null). Also added an option --input_key_hex for ldb idump to indicate that the passed in user keys are in hex. Test Plan: run ldb manifest_dump Reviewers: dhruba, emayanke CC: leveldb Differential Revision: https://reviews.facebook.net/D12111
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由 Haobo Xu 提交于
Summary: The ability to dump internal keys associated with certain user keys, directly from sst files, is very useful for diagnosis. Will incorporate it directly into ldb later. Test Plan: run it Reviewers: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D12075
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- 07 8月, 2013 3 次提交
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由 Mayank Agarwal 提交于
Summary: Test Plan: Reviewers: CC: Task ID: # Blame Rev:
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由 Deon Nicholas 提交于
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由 Deon Nicholas 提交于
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- 06 8月, 2013 7 次提交
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由 Deon Nicholas 提交于
Summary: Here are the major changes to the Merge Interface. It has been expanded to handle cases where the MergeOperator is not associative. It does so by stacking up merge operations while scanning through the key history (i.e.: during Get() or Compaction), until a valid Put/Delete/end-of-history is encountered; it then applies all of the merge operations in the correct sequence starting with the base/sentinel value. I have also introduced an "AssociativeMerge" function which allows the user to take advantage of associative merge operations (such as in the case of counters). The implementation will always attempt to merge the operations/operands themselves together when they are encountered, and will resort to the "stacking" method if and only if the "associative-merge" fails. This implementation is conjectured to allow MergeOperator to handle the general case, while still providing the user with the ability to take advantage of certain efficiencies in their own merge-operator / data-structure. NOTE: This is a preliminary diff. This must still go through a lot of review, revision, and testing. Feedback welcome! Test Plan: -This is a preliminary diff. I have only just begun testing/debugging it. -I will be testing this with the existing MergeOperator use-cases and unit-tests (counters, string-append, and redis-lists) -I will be "desk-checking" and walking through the code with the help gdb. -I will find a way of stress-testing the new interface / implementation using db_bench, db_test, merge_test, and/or db_stress. -I will ensure that my tests cover all cases: Get-Memtable, Get-Immutable-Memtable, Get-from-Disk, Iterator-Range-Scan, Flush-Memtable-to-L0, Compaction-L0-L1, Compaction-Ln-L(n+1), Put/Delete found, Put/Delete not-found, end-of-history, end-of-file, etc. -A lot of feedback from the reviewers. Reviewers: haobo, dhruba, zshao, emayanke Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D11499
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由 Mayank Agarwal 提交于
Summary: remove reference Test Plan: make OPT=-g Reviewers: CC: Task ID: # Blame Rev:
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由 Jim Paton 提交于
Summary: This diff adds histogram stats for soft_rate_limit stalls. It also renames the old rate_limit stats to hard_rate_limit. Test Plan: make -j32 check Reviewers: dhruba, haobo, MarkCallaghan Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D12021
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由 Mayank Agarwal 提交于
Summary: rocksdb replicaiton will need this when writing value+TS from master to slave 'as is' Test Plan: make Reviewers: dhruba, vamsi, haobo Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11919
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由 Jim Paton 提交于
Summary: This diff adds support for both soft and hard rate limiting. The following changes are included: 1) Options.rate_limit is renamed to Options.hard_rate_limit. 2) Options.rate_limit_delay_milliseconds is renamed to Options.rate_limit_delay_max_milliseconds. 3) Options.soft_rate_limit is added. 4) If the maximum compaction score is > hard_rate_limit and rate_limit_delay_max_milliseconds == 0, then writes are delayed by 1 ms at a time until the max compaction score falls below hard_rate_limit. 5) If the max compaction score is > soft_rate_limit but <= hard_rate_limit, then writes are delayed by 0-1 ms depending on how close we are to hard_rate_limit. 6) Users can disable 4 by setting hard_rate_limit = 0. They can add a limit to the maximum amount of time waited by setting rate_limit_delay_max_milliseconds > 0. Thus, the old behavior can be preserved by setting soft_rate_limit = 0, which is the default. Test Plan: make -j32 check ./db_stress Reviewers: dhruba, haobo, MarkCallaghan Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D12003
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由 Mayank Agarwal 提交于
Summary: TTL uses compaction filter to purge key-values and required the user to not pass one. This diff makes it accommodating of user's compaciton filter. Added test to ttl_test Test Plan: make; ./ttl_test Reviewers: dhruba, haobo, vamsi Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11973
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由 Mayank Agarwal 提交于
Summary: did a find-replace Test Plan: make Reviewers: dhruba, haobo Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11979
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- 02 8月, 2013 2 次提交
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由 Mayank Agarwal 提交于
Summary: Implemented a TtlMergeOperator class which inherits from MergeOperator and is TTL aware. It strips out timestamp from existing_value and attaches timestamp to new_value, calling user-provided-Merge in between. Test Plan: make all check Reviewers: haobo, dhruba Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D11775
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由 Mayank Agarwal 提交于
Expand KeyMayExist to return the proper value if it can be found in memory and also check block_cache Summary: Removed KeyMayExistImpl because KeyMayExist demanded Get like semantics now. Removed no_io from memtable and imm because we need the proper value now and shouldn't just stop when we see Merge in memtable. Added checks to block_cache. Updated documentation and unit-test Test Plan: make all check;db_stress for 1 hour Reviewers: dhruba, haobo Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11853
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- 01 8月, 2013 2 次提交
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由 Jim Paton 提交于
Summary: Currently, when a certain number of level0 files (level0_slowdown_writes_trigger) are present, RocksDB will slow down each write by 1ms. There is a second limit of level0 files at which RocksDB will stop writes altogether (level0_stop_writes_trigger). This patch enables the user to supply a third parameter specifying the number of files at which Rocks will start slowing down writes (level0_start_slowdown_writes). When this number is reached, Rocks will slow down writes as a quadratic function of level0_slowdown_writes_trigger - num_level0_files. For some workloads, this improves latency and throughput. I will post some stats momentarily in https://our.intern.facebook.com/intern/tasks/?t=2613384. Test Plan: make -j32 check ./db_stress ./db_bench Reviewers: dhruba, haobo, MarkCallaghan, xjin Reviewed By: xjin CC: leveldb, xjin, zshao Differential Revision: https://reviews.facebook.net/D11859
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由 Xing Jin 提交于
Summary: Add an option for arena block size, default value 4096 bytes. Arena will allocate blocks with such size. I am not sure about passing parameter to skiplist in the new virtualized framework, though I talked to Jim a bit. So add Jim as reviewer. Test Plan: new unit test, I am running db_test. For passing paramter from configured option to Arena, I tried tests like: TEST(DBTest, Arena_Option) { std::string dbname = test::TmpDir() + "/db_arena_option_test"; DestroyDB(dbname, Options()); DB* db = nullptr; Options opts; opts.create_if_missing = true; opts.arena_block_size = 1000000; // tested 99, 999999 Status s = DB::Open(opts, dbname, &db); db->Put(WriteOptions(), "a", "123"); } and printed some debug info. The results look good. Any suggestion for such a unit-test? Reviewers: haobo, dhruba, emayanke, jpaton Reviewed By: dhruba CC: leveldb, zshao Differential Revision: https://reviews.facebook.net/D11799
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- 30 7月, 2013 4 次提交
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由 Dhruba Borthakur 提交于
Summary: Fix README contents. Test Plan: Reviewers: CC: Task ID: # Blame Rev:
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由 Jim Paton 提交于
Summary: After my patch for stall histograms, there are redundant calls to NowMicros() by both the stop watches and DBImpl::MakeRoomForWrites. So I removed the redundant calls such that the information is gotten from the stopwatch. Test Plan: make clean make -j32 check Reviewers: dhruba, haobo, MarkCallaghan Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11883
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由 Jim Paton 提交于
Summary: Currently, merge_test uses /tmp/testdb for the test database. It should really use something more specific to merge_test. Most of the other tests use test::TmpDir() + "/<test name>db". This patch implements such behavior for merge_test; it makes merge_test use test::TmpDir() + "/merge_testdb" Test Plan: make clean make -j32 merge_test ./merge_test Reviewers: dhruba, haobo Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11877
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由 Jim Paton 提交于
Summary: Previously, statistics are kept on how much time is spent on stalls of different types. This patch adds support for keeping number of stalls of each type. For example, instead of just reporting how many microseconds are spent waiting for memtables to be compacted, it will also report how many times a write stalled for that to occur. Test Plan: make -j32 check ./db_stress # Not really sure what else should be done... Reviewers: dhruba, MarkCallaghan, haobo Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11841
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- 25 7月, 2013 1 次提交
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由 Dhruba Borthakur 提交于
Revert 6fbe4e98: If disable wal is set, then batch commits are avoided Summary: Revert "If disable wal is set, then batch commits are avoided" because keeping the mutex while inserting into the skiplist means that readers and writes are all serialized on the mutex. Test Plan: Reviewers: CC: Task ID: # Blame Rev:
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- 24 7月, 2013 4 次提交
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由 Jim Paton 提交于
Summary: This diff virtualizes the skiplist interface so that users can provide their own implementation of a backing store for MemTables. Eventually, the backing store will be responsible for its own synchronization, allowing users (and us) to experiment with different lockless implementations. Test Plan: make clean make -j32 check ./db_stress Reviewers: dhruba, emayanke, haobo Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11739
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由 Dhruba Borthakur 提交于
Summary: rocksdb uses batch commit to write to transaction log. But if disable wal is set, then writes to transaction log are anyways avoided. In this case, there is not much value-add to batch things, batching can cause unnecessary delays to Puts(). This patch avoids batching when disableWal is set. Test Plan: make check. I am running db_stress now. Reviewers: haobo Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D11763
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由 Mayank Agarwal 提交于
Summary: filter_deletes options introduced in db_stress makes it drop Deletes on key if KeyMayExist(key) returns false on the key. code change was simple and tested so not wasting reviewer's time. Test Plan: maek crash_test; python tools/db_crashtest[1|2].py CC: dhruba, vamsi Differential Revision: https://reviews.facebook.net/D11769
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由 Mayank Agarwal 提交于
Summary: Introduced KeyMayExist checking during writebatch-delete and removed from Outer Delete API because it uses writebatch-delete. Added code to skip getting Table from disk if not already present in table_cache. Some renaming of variables. Introduced KeyMayExistImpl which allows checking since specified sequence number in GetImpl useful to check partially written writebatch. Changed KeyMayExist to not be pure virtual and provided a default implementation. Expanded unit-tests in db_test to check appropriately. Ran db_stress for 1 hour with ./db_stress --max_key=100000 --ops_per_thread=10000000 --delpercent=50 --filter_deletes=1 --statistics=1. Test Plan: db_stress;make check Reviewers: dhruba, haobo Reviewed By: dhruba CC: leveldb, xjin Differential Revision: https://reviews.facebook.net/D11745
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- 23 7月, 2013 1 次提交
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由 Haobo Xu 提交于
Summary: as title Test Plan: make check; Reviewers: xjin CC: leveldb Differential Revision: https://reviews.facebook.net/D11751
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- 20 7月, 2013 1 次提交
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由 Haobo Xu 提交于
Summary: As title. This diff added an option reduce_level to CompactRange. When set to true, it will try to move the files back to the minimum level sufficient to hold the data set. Note that the default is set to true now, just to excerise it in all existing tests. Will set the default to false before check-in, for backward compatibility. Test Plan: make check; Reviewers: dhruba, emayanke CC: leveldb Differential Revision: https://reviews.facebook.net/D11553
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- 13 7月, 2013 1 次提交
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由 Mayank Agarwal 提交于
Summary: NewBloomFilterPolicy call requires Delete to be called later on Test Plan: make; valgrind ./db_test Reviewers: haobo, dhruba, vamsi Differential Revision: https://reviews.facebook.net/D11667
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- 12 7月, 2013 2 次提交
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由 Mayank Agarwal 提交于
Summary: Wrote a new function in db_impl.c-CheckKeyMayExist that calls Get but with a new parameter turned on which makes Get return false only if bloom filters can guarantee that key is not in database. Delete calls this function and if the option- deletes_use_filter is turned on and CheckKeyMayExist returns false, the delete will be dropped saving: 1. Put of delete type 2. Space in the db,and 3. Compaction time Test Plan: make all check; will run db_stress and db_bench and enhance unit-test once the basic design gets approved Reviewers: dhruba, haobo, vamsi Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D11607
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由 Xing Jin 提交于
Summary: This diff is more about my question when reading compaction codes, instead of a normal diff. I don't quite understand the logic here. Test Plan: I didn't do any test. If this is a bug, I will continue doing some test. Reviewers: haobo, dhruba, emayanke Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11661
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- 11 7月, 2013 1 次提交
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由 Mayank Agarwal 提交于
Summary: db_stress should alos print complete statistics like db_bench. Needed this when I wanted to measure number of delete-IOs dropped due to CheckKeyMayExist to be introduced to rocksdb codebase later- to make deltes in rocksdb faster Test Plan: make db_stress;./db_stress --max_key=100 --ops_per_thread=1000 --statistics=1 Reviewers: sheki, dhruba, vamsi, haobo Reviewed By: dhruba Differential Revision: https://reviews.facebook.net/D11655
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- 10 7月, 2013 1 次提交
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由 Haobo Xu 提交于
Summary: As title. Test Plan: make check; db_bench Reviewers: dhruba, MarkCallaghan CC: leveldb Differential Revision: https://reviews.facebook.net/D11643
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- 09 7月, 2013 1 次提交
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由 Haobo Xu 提交于
Summary: Replication logic would be simplifeid if we can guarantee that write sequence number is always contiguous, even if write failure occurs. Dhruba and I looked at the sequence number generation part of the code. It seems fixable. Note that if WAL was successful and insert into memtable was not, we would be in an unfortunate state. The approach in this diff is : IO error is expected and error status will be returned to client, sequence number will not be advanced; In-mem error is not expected and we panic. Test Plan: make check; db_stress Reviewers: dhruba, sheki CC: leveldb Differential Revision: https://reviews.facebook.net/D11439
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- 04 7月, 2013 1 次提交
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由 Haobo Xu 提交于
Summary: This diff added a command 'idump' to ldb tool, which dumps the internal key/value pairs. It could be useful for diagnosis and estimating the per user key 'overhead'. Also cleaned up the ldb code a bit where I touched. Test Plan: make check; ldb idump Reviewers: emayanke, sheki, dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11517
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- 02 7月, 2013 1 次提交
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由 Mayank Agarwal 提交于
Summary: rocksdb-2.0 released to third party Test Plan: visual inspection Reviewers: dhruba, haobo, sheki Reviewed By: dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11559
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- 27 6月, 2013 2 次提交
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由 Haobo Xu 提交于
Summary: As title. Exposed a Count function that returns the number of updates in a batch. Could be handy for replication sequence number check. Test Plan: make check; Reviewers: emayanke, sheki, dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D11523
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由 Deon Nicholas 提交于
Summary: With the Makefile now updated to correctly update all .o files, this should fix the issues recompiling stringappend_test. This should also fix the "segmentation-fault" that we were getting earlier. Now, stringappend_test should be clean, and I have added it back to the unit-tests. Also made some minor updates to the tests themselves. Test Plan: 1. make clean; make stringappend_test -j 32 (will test it by itself) 2. make clean; make all check -j 32 (to run all unit tests) 3. make clean; make release (test in release mode) 4. valgrind ./stringappend_test (valgrind tests) Reviewers: haobo, jpaton, dhruba Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D11505
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- 26 6月, 2013 1 次提交
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由 Deon Nicholas 提交于
Summary: The old Makefile did not remove ALL .o and .d files, but rather only those that happened to be in the root folder and one-level deep. This was causing issues when recompiling files in deeper folders. This fix now causes make clean to find ALL .o and .d files via a unix "find" command, and then remove them. Test Plan: make clean; make all -j 32; Reviewers: haobo, jpaton, dhruba Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D11493
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- 22 6月, 2013 1 次提交
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由 Mayank Agarwal 提交于
Summary: [start_time, end_time) is waht I'm following for the buckets and the whole time-range. Also cleaned up some code in db_ttl.* Not correcting the spacing/indenting convention for util/ldb_cmd.cc in this diff. Test Plan: python ldb_test.py, make ttl_test, Run mcrocksdb-backup tool, Run the ldb tool on 2 mcrocksdb production backups form sigmafio033.prn1 Reviewers: vamsi, haobo Reviewed By: vamsi Differential Revision: https://reviews.facebook.net/D11433
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- 20 6月, 2013 1 次提交
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由 Mayank Agarwal 提交于
Introducing timeranged scan, timeranged dump in ldb. Also the ability to count in time-batches during Dump Summary: Scan and Dump commands in ldb use iterator. We need to also print timestamp for ttl databases for debugging. For this I create a TtlIterator class pointer in these functions and assign it the value of Iterator pointer which actually points to t TtlIterator object, and access the new function ValueWithTS which can return TS also. Buckets feature for dump command: gives a count of different key-values in the specified time-range distributed across the time-range partitioned according to bucket-size. start_time and end_time are specified in unixtimestamp and bucket in seconds on the user-commandline Have commented out 3 ines from ldb_test.py so that the test does not break right now. It breaks because timestamp is also printed now and I have to look at wildcards in python to compare properly. Test Plan: python tools/ldb_test.py Reviewers: vamsi, dhruba, haobo, sheki Reviewed By: vamsi CC: leveldb Differential Revision: https://reviews.facebook.net/D11403
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