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https://issues.apache.org/jira/browse/HDFS-7738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14309829#comment-14309829
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Tsz Wo Nicholas Sze commented on HDFS-7738:
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> If the desire to have these is strong then they need sufficient logging
> information, which would describe the full conditions under which a failure
> occurs when it does.
We already have
{code}
LOG.info("newLength=" + newLength + ", isReady=" + isReady);
{code}
I think it is good enough. Agree?
> Add more negative tests for truncate
> ------------------------------------
>
> Key: HDFS-7738
> URL: https://issues.apache.org/jira/browse/HDFS-7738
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: test
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Priority: Minor
> Fix For: 2.7.0
>
> Attachments: h7738_20150204.patch, h7738_20150205.patch,
> h7738_20150205b.patch, h7738_20150206.patch
>
>
> The following are negative test cases for truncate.
> - new length > old length
> - truncating a directory
> - truncating a non-existing file
> - truncating a file without write permission
> - truncating a file opened for append
> - truncating a file in safemode
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