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https://issues.apache.org/jira/browse/HADOOP-4292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12637260#action_12637260
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Hairong Kuang commented on HADOOP-4292:
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The reason that I did not propose adding truncate() to FileSystem.java is that
I did not make dramatic change to FileSystem APIs. But if this is OK with
everybody, it is fine with me too. :-) If truncate returns an FSDataOutput,
next write does not need to open it for appending first.
> append() does not work for LocalFileSystem
> ------------------------------------------
>
> Key: HADOOP-4292
> URL: https://issues.apache.org/jira/browse/HADOOP-4292
> Project: Hadoop Core
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.18.0, 0.19.0
> Reporter: Raghu Angadi
> Assignee: Hairong Kuang
> Priority: Blocker
> Fix For: 0.18.2, 0.19.0
>
>
> append is supported by LocalFileSystem but it does not update crc when a file
> is appended.
> When you enable checksum verification {{TestLocalFileSystem.testAppend}}
> fails. Since HADOOP-4277 is a blocker for 0.17 I am planning to disable this
> test in HADOOP-4277.
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