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https://issues.apache.org/jira/browse/HBASE-12023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14142235#comment-14142235
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Lars Hofhansl commented on HBASE-12023:
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Agreed let's keep this open. I do want to have an RC for 0.94.24 soon. Worst
case I'll file a new jira.
bq. We can do the same optimization to HRegion#addFamilyMapToWALEdit too
Good call. [~vrodionov], I wonder why this one did not show up in your trace.
> HRegion.applyFamilyMapToMemstore creates too many iterator objects.
> -------------------------------------------------------------------
>
> Key: HBASE-12023
> URL: https://issues.apache.org/jira/browse/HBASE-12023
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.5, 0.94.23
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Priority: Minor
> Fix For: 2.0.0, 0.98.7, 0.94.24, 0.99.1
>
> Attachments: 12023-trunk.txt, HBASE-12023-0.94.patch,
> HBASE-12023.patch, applyFamilyMapToMemstore (1).tiff
>
>
> for ... loop (creates iterator) inside another for loop. Produces a lot of
> garbage. See attached picture.
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