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https://issues.apache.org/jira/browse/HADOOP-7133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004945#comment-13004945
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Matt Foley commented on HADOOP-7133:
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Hi Hairong, glad it's working well for you. Your suggestion to use ThreadLocal
buffers is perfect. It will take me a little time to implement and test,
though, so I'd like to go ahead with Jakob's suggestion, if you don't mind, so
we can proceed with review of the second part of the patch in HDFS-1445.
> CLONE to COMMON - HDFS-1445 Batch the calls in DataStorage to
> FileUtil.createHardLink(), so we call it once per directory instead of once
> per file
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-7133
> URL: https://issues.apache.org/jira/browse/HADOOP-7133
> Project: Hadoop Common
> Issue Type: Improvement
> Components: util
> Affects Versions: 0.20.2
> Reporter: Matt Foley
> Assignee: Matt Foley
> Fix For: 0.22.0
>
> Attachments: HDFS-1445-trunk.v23_common_1-of-3.patch
>
>
> The fix for HDFS-1445 "Batch the calls in DataStorage to
> FileUtil.createHardLink(), so we call it once per directory instead of once
> per file" requires coordinated change in COMMON and HDFS. This is the COMMON
> portion, submitted here under a separate bug to activate the automated
> testing.
> Warning: this patch to COMMON, by itself, will break HDFS. It requires
> coordinated commit of the HDFS portion of the patch in HDFS-1445.
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