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https://issues.apache.org/jira/browse/HADOOP-5332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12680294#action_12680294
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Raghu Angadi commented on HADOOP-5332:
--------------------------------------

Since append is disabled by default, the tests that needed fixes in HADOOP-5225 
should have append enabled. The current patch only has the FSDataset fix. This 
could explain two of the tests failed.

Apart from that, +1 for the patch.

TestPread failures in Hudson seem unrelated.


> Make support for file append API configurable
> ---------------------------------------------
>
>                 Key: HADOOP-5332
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5332
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Nigel Daley
>            Assignee: dhruba borthakur
>            Priority: Blocker
>             Fix For: 0.19.2, 0.20.0
>
>         Attachments: disableAppend_0.19.patch, disableAppend_0.19.patch, 
> disableAppend_0.19.patch, disableAppendTrunk.patch, disableAppendTrunk.patch, 
> disableAppendTrunk.patch, disableAppendTrunk.patch, disableAppendTrunk.patch, 
> disableAppendTrunk.patch
>
>
> FSNamesystem already has a private dfs.support.append config option.  Make 
> this public in src/hdfs/hdfs-default.xml and set the default to false.  

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