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https://issues.apache.org/jira/browse/HADOOP-2655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12572447#action_12572447
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Hudson commented on HADOOP-2655:
--------------------------------
Integrated in Hadoop-trunk #412 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/412/])
> Copy on write for data and metadata files in the presence of snapshots
> ----------------------------------------------------------------------
>
> Key: HADOOP-2655
> URL: https://issues.apache.org/jira/browse/HADOOP-2655
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Fix For: 0.17.0
>
> Attachments: copyOnWrite.patch, copyOnWrite.patch,
> copyOnWrite2.patch, copyOnWrite3.patch
>
>
> If a DFS Client wants to append data to an existing file (appends,
> HADOOP-1700) and a snapshot is present, the Datanoed has to implement some
> form of a copy-on-write for writes to data and meta data files.
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