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https://issues.apache.org/jira/browse/HBASE-6116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404551#comment-13404551
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stack commented on HBASE-6116:
------------------------------

Dumb?: For sure the //writing was enabled?  If saturated network, I could 
imagine it not making a diff but if spare bandwidth.... I'd think it'd show 
through.  The //write would make us saturate the network on an interface before 
a -- (pipeline) write would I suppose.  And its easy enough for PE to saturate 
network IIRC anyway, w/o //writes.
                
> Allow parallel HDFS writes for HLogs.
> -------------------------------------
>
>                 Key: HBASE-6116
>                 URL: https://issues.apache.org/jira/browse/HBASE-6116
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>         Attachments: 6116-v1.txt, apurtell-patches.zip, 
> pipelined-vs-parallel-comparison.zip
>
>
> In HDFS-1783 I adapted Dhrubas changes to be used in Hadoop trunk.
> This issue will include the necessary reflection changes to optionally enable 
> this for the WALs in HBase.

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