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Posted to dev@ambari.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2015/12/14 21:37:46 UTC
[jira] [Commented] (AMBARI-13109) Verify that max logs parameter
wouldn't cause premature region flush
[ https://issues.apache.org/jira/browse/AMBARI-13109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15056673#comment-15056673 ]
Ted Yu commented on AMBARI-13109:
---------------------------------
See also HBASE-14951
> Verify that max logs parameter wouldn't cause premature region flush
> --------------------------------------------------------------------
>
> Key: AMBARI-13109
> URL: https://issues.apache.org/jira/browse/AMBARI-13109
> Project: Ambari
> Issue Type: Improvement
> Reporter: Ted Yu
>
> For hbase, the following relationship should be maintained:
> dfs.blocksize * 0.95 * hbase.regionserver.maxlogs (default 32) > hbase.regionserver.global.memstore.upperLimit * HBASE_HEAPSIZE
> The rationale is to avoid premature region flush due to log roll which is triggered by insufficiently high max logs.
> When user changes the values for max logs, memstore upper limit or max heap size, we should verify that the above relationship is satisfied.
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