Siying Dong 64b6452e0c Make InternalKeyComparator final and directly use it in merging iterator ... Summary: Merging iterator invokes InternalKeyComparator.Compare() frequently to heap merge. By making InternalKeyComparator final and merging iterator to directly use InternalKeyComparator rather than through Iterator interface, we can give compiler a choice to avoid one more virtual function call if possible. I ran readseq benchmark in memory-only use case to make sure the performance at least doesn't regress. I have to disable the final key word in debug build, as a hack test class depends on overriding the class. Closes https://github.com/facebook/rocksdb/pull/2860 Differential Revision: D5800461 Pulled By: siying fbshipit-source-id: ab876f22a09bb5c560740911412336e0e25ccb53		2017-09-11 12:04:21 -07:00
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date_tiered_db_impl.cc	Make InternalKeyComparator final and directly use it in merging iterator	2017-09-11 12:04:21 -07:00
date_tiered_db_impl.h	Make InternalKeyComparator final and directly use it in merging iterator	2017-09-11 12:04:21 -07:00
date_tiered_test.cc	Fix GetCurrentTime() initialization for valgrind	2017-07-05 12:12:00 -07:00