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https://issues.apache.org/jira/browse/AMBARI-13109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16120333#comment-16120333
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Ted Yu edited comment on AMBARI-13109 at 12/24/17 5:30 AM:
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The max logs parameter plays an important role in preventing fragmentation in
memstore.
was (Author: [email protected]):
The max logs parameter plays an important role in preventing fragmentation in
memstore .
> 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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