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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2012/08/09 11:08:19 UTC

[jira] [Commented] (HBASE-6529) With HFile v2, the region server will always perform an extra copy of source files

    [ https://issues.apache.org/jira/browse/HBASE-6529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13431688#comment-13431688 ] 

stack commented on HBASE-6529:
------------------------------

+1 on patch.  Good one Jason.
                
> 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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