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https://issues.apache.org/jira/browse/HBASE-15509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15218520#comment-15218520
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Vladimir Rodionov commented on HBASE-15509:
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{quote}
So any chance for a test which measures the compaction speed up
{quote}
Sure. The problem with tests - we have to run them for a long time, because,
the longer test runs the more benefits from reducing garbage allocation in
compaction thread(s) we will get (guess, why?) I am going to run it today for 1
h at least under sustained (heavy) load and will publish results.
> Avoid copy of block data in HFileBlock$Writer.finishBlock
> ---------------------------------------------------------
>
> Key: HBASE-15509
> URL: https://issues.apache.org/jira/browse/HBASE-15509
> Project: HBase
> Issue Type: Sub-task
> Components: HFile
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Attachments: HBASE-15509-v1.patch, HBASE-15509-v2.patch
>
>
> This calls ByteArrayOutputStream.toByteArray() which creates a copy of data
> block.
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