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https://issues.apache.org/jira/browse/HBASE-775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12622928#action_12622928
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stack commented on HBASE-775:
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Hey Billy: Thanks for the patch. You made size the determinant. I may be
wrong, but I didn't think size mattered; the compaction is not done in RAM but
by streaming a set of inputs to an output.
> max mapfiles to compact at one time
> -----------------------------------
>
> Key: HBASE-775
> URL: https://issues.apache.org/jira/browse/HBASE-775
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: Billy Pearson
> Assignee: Billy Pearson
> Priority: Blocker
> Fix For: 0.2.1, 0.3.0
>
> Attachments: 775-patch.txt
>
>
> Currently we compact all map files with no upper limit this could cause a
> regionserver to OOME if the compaction get behind and the number of mapfiles
> build up.
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