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Hadoop QA commented on HBASE-15205: ----------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 4s {color} | {color:red} HBASE-15205 does not apply to master. Rebase required? Wrong Branch? See https://yetus.apache.org/documentation/latest/precommit-patchnames for help. {color} | \\ \\ || Subsystem || Report/Notes || | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12789877/HBASE-15205_8.patch | | JIRA Issue | HBASE-15205 | | Powered by | Apache Yetus 0.1.0 http://yetus.apache.org | | Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/693/console | This message was automatically generated. > Do not find the replication scope for every WAL#append() > -------------------------------------------------------- > > Key: HBASE-15205 > URL: https://issues.apache.org/jira/browse/HBASE-15205 > Project: HBase > Issue Type: Sub-task > Components: regionserver > Reporter: ramkrishna.s.vasudevan > Assignee: ramkrishna.s.vasudevan > Priority: Minor > Fix For: 2.0.0 > > Attachments: HBASE-15204_6.patch, HBASE-15205.patch, > HBASE-15205_1.patch, HBASE-15205_2.patch, HBASE-15205_3.patch, > HBASE-15205_4.patch, HBASE-15205_6.patch, HBASE-15205_6.patch, > HBASE-15205_7.patch, HBASE-15205_8.patch, ScopeWALEdits.jpg, > ScopeWALEdits_afterpatch.jpg > > > After the byte[] and char[] the other top contributor for lot of GC (though > it is only 2.86%) is the UTF_8.newDecoder. > This happens because for every WAL append we try to calculate the replication > scope associate with the families associated with the TableDescriptor. I > think per WAL append doing this is very costly and creates lot of garbage. -- This message was sent by Atlassian JIRA (v6.3.4#6332)