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https://issues.apache.org/jira/browse/HBASE-6529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13431837#comment-13431837
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Zhihong Ted Yu commented on HBASE-6529:
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I think this JIRA is related, if not identical, to HBASE-6358.
The root cause is that we cannot rely on hadoop semantics for judging equality
between HFileSystem and DistributedFileSystem.
We should not tie the solution to HFileV2 which appears only in a comment in
Store.java.
> With HFile v2, the region server will always perform an extra copy of source
> files
> ----------------------------------------------------------------------------------
>
> Key: HBASE-6529
> URL: https://issues.apache.org/jira/browse/HBASE-6529
> Project: HBase
> Issue Type: Bug
> Components: performance, regionserver
> Affects Versions: 0.94.0, 0.96.0
> Reporter: Jason Dai
> Attachments: hbase-6529.diff
>
>
> With HFile v2 implementation in HBase 0.94 & 0.96, the region server will use
> HFileSystem as its {color:blue}fs{color}. When it performs bulk load in
> Store.bulkLoadHFile(), it checks if its {color:blue}fs{color} is the same as
> {color:blue}srcFs{color}, which however will be DistributedFileSystem.
> Consequently, it will always perform an extra copy of source files.
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