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https://issues.apache.org/jira/browse/HADOOP-2655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12571224#action_12571224
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Hadoop QA commented on HADOOP-2655:
-----------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12376169/copyOnWrite3.patch
against trunk revision 619744.
@author +1. The patch does not contain any @author tags.
tests included +1. The patch appears to include 7 new or modified tests.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new javac compiler
warnings.
release audit +1. The applied patch does not generate any new release
audit warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests +1. The patch passed core unit tests.
contrib tests +1. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1831/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1831/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1831/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1831/console
This message is automatically generated.
> 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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