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sdong 712bc4b6a2 Fix regression bug in partitioned index reseek caused by #6531 (#6551) 
Summary:
https://github.com/facebook/rocksdb/pull/6531 removed some code in partitioned index seek logic. By mistake the logic of storing previous index offset is removed, while the logic of using it is preserved, so that the code might use wrong value to determine reseeking condition.
This will trigger a bug, if following a Seek() not going to the last block, SeekToLast() is called, and then Seek() is called which should position the cursor to the block before SeekToLast().
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6551

Test Plan: Add a unit test that reproduces the bug. In the same unit test, also some reseek cases are covered to avoid regression.

Reviewed By: pdillinger

Differential Revision: D20493990

fbshipit-source-id: 3919aa4861c0481ec96844e053048da1a934b91d
2020-03-17 12:33:10 -07:00
..
adaptive Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
block_based Fix regression bug in partitioned index reseek caused by #6531 (#6551) 2020-03-17 12:33:10 -07:00
cuckoo Remove memcpy from RandomAccessFileReader::Read in direct IO mode (#6455) 2020-03-06 14:05:12 -08:00
plain Remove memcpy from RandomAccessFileReader::Read in direct IO mode (#6455) 2020-03-06 14:05:12 -08:00
block_fetcher.cc Remove memcpy from RandomAccessFileReader::Read in direct IO mode (#6455) 2020-03-06 14:05:12 -08:00
block_fetcher.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
cleanable_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
format.cc Remove memcpy from RandomAccessFileReader::Read in direct IO mode (#6455) 2020-03-06 14:05:12 -08:00
format.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
get_context.cc return timestamp from get (#6409) 2020-03-02 16:01:00 -08:00
get_context.h return timestamp from get (#6409) 2020-03-02 16:01:00 -08:00
internal_iterator.h Iterator with timestamp (#6255) 2020-03-06 16:24:27 -08:00
iter_heap.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
iterator.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
iterator_wrapper.h Some minor fix-ups (#6440) 2020-02-21 15:09:56 -08:00
merger_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
merging_iterator.cc Some minor fix-ups (#6440) 2020-02-21 15:09:56 -08:00
merging_iterator.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
meta_blocks.cc Fix range deletion tombstone ingestion with global seqno (#6429) 2020-02-25 15:31:48 -08:00
meta_blocks.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
mock_table.cc Remove memcpy from RandomAccessFileReader::Read in direct IO mode (#6455) 2020-03-06 14:05:12 -08:00
mock_table.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
multiget_context.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
persistent_cache_helper.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
persistent_cache_helper.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
persistent_cache_options.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
scoped_arena_iterator.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
sst_file_reader.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
sst_file_reader_test.cc Allow table/sst_file_reader_test.cc to use custom Env (#6536) 2020-03-17 11:02:13 -07:00
sst_file_writer.cc fix some spelling typos (#6464) 2020-02-28 14:14:03 -08:00
sst_file_writer_collectors.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_builder.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_properties.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_properties_internal.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_reader.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_reader_bench.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_reader_caller.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_test.cc Fix regression bug in partitioned index reseek caused by #6531 (#6551) 2020-03-17 12:33:10 -07:00
two_level_iterator.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
two_level_iterator.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00