197034e4c3
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 |
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rocksdb | ||
utilities |