Dhruba Borthakur 197034e4c3 An iterator may automatically invoke reseeks. ...

Summary:
An iterator invokes reseek if the number of sequential skips over the
same userkey exceeds a configured number. This makes iter->Next()
faster (bacause of fewer key compares) if a large number of
adjacent internal keys in a table (sst or memtable) have the
same userkey.

Test Plan: Unit test DBTest.IterReseek.

Reviewers: emayanke, haobo, xjin

Reviewed By: xjin

CC: leveldb, xjin

Differential Revision: https://reviews.facebook.net/D11865

2013-09-06 11:50:53 -07:00

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Enhance db_bench

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builder.cc

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builder.h

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c_test.c

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c.cc

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corruption_test.cc

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db_bench.cc

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db_filesnapshot.cc

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db_impl_readonly.cc

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db_impl_readonly.h

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db_impl.cc

Return pathname relative to db dir in LogFile and cleanup AppendSortedWalsOfType

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db_impl.h

New ldb command to convert compaction style

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db_iter.cc

An iterator may automatically invoke reseeks.

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db_iter.h

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db_statistics.h

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db_stats_logger.cc

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db_test.cc

An iterator may automatically invoke reseeks.

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dbformat_test.cc

Fix all warnings generated by -Wall option to the compiler.

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dbformat.cc

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dbformat.h

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deletefile_test.cc

Fix build caused by DeleteFile not tolerating / at the beginning

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filename_test.cc

Added meta-database support.

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filename.cc

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filename.h

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log_format.h

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log_reader.cc

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log_reader.h

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log_test.cc

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log_writer.cc

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log_writer.h

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memtable.cc

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memtable.h

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memtablelist.cc

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memtablelist.h

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merge_helper.cc

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merge_helper.h

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merge_operator.cc

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merge_test.cc

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perf_context_test.cc

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perf_context.cc

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prefix_filter_iterator.h

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repair.cc

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skiplist_test.cc

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skiplist.h

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snapshot.h

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table_cache.cc

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table_cache.h

Introduced a new flag non_blocking_io in ReadOptions.

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transaction_log_impl.cc

API for getting archived log files

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transaction_log_impl.h

Return pathname relative to db dir in LogFile and cleanup AppendSortedWalsOfType

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version_edit_test.cc

Reduce write amplification by merging files in L0 back into L0

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version_edit.cc

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version_edit.h

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version_set_reduce_num_levels.cc

Fix valgrind errors in rocksdb tests: auto_roll_logger_test, reduce_levels_test

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version_set_test.cc

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version_set.cc

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version_set.h

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write_batch_internal.h

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write_batch_test.cc

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write_batch.cc

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