[ https://issues.apache.org/jira/browse/HBASE-3082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923086#action_12923086 ]
HBase Review Board commented on HBASE-3082: ------------------------------------------- Message from: thekhem...@facebook.com ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: http://review.cloudera.org/r/1053/ ----------------------------------------------------------- Review request for hbase and Jonathan Gray. Summary ------- Ensure that during incrementColumnValue() the scan triggered by the get() does an early exit if it finds the KV in the memstore. This addresses bug HBASE-3082. http://issues.apache.org/jira/browse/HBASE-3082 Diffs ----- src/main/java/org/apache/hadoop/hbase/regionserver/ControlledScan.java PRE-CREATION src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java 0e3940c src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java 4775fc8 Diff: http://review.cloudera.org/r/1053/diff Testing ------- I have been testing it on my cluster. No unit testing yet. Thanks, khemani > For ICV gets, first look in MemStore before reading StoreFiles > -------------------------------------------------------------- > > Key: HBASE-3082 > URL: https://issues.apache.org/jira/browse/HBASE-3082 > Project: HBase > Issue Type: Improvement > Components: regionserver > Reporter: Jonathan Gray > Assignee: Prakash Khemani > > For incrementColumnValue operations, it is possible to check MemStore for the > column being incremented without sacrificing correctness. If the column is > not found in MemStore, we would then have to do a normal Get that > opens/checks all StoreFiles for the given Store. > In practice, this makes increment operations significantly faster for > recently/frequently incremented columns. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.