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https://issues.apache.org/jira/browse/HDFS-8505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14567156#comment-14567156
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Brahma Reddy Battula commented on HDFS-8505:
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[~archanat] Thanks for reporting this jira...
{quote} Cannot truncate to a larger file size. Current size: 2, truncate size:
2{quote}
Yes, it's make sense to me..Attaching the patch for same..
> Truncate should not be success when Truncate Size and Current Size are equal.
> -----------------------------------------------------------------------------
>
> Key: HDFS-8505
> URL: https://issues.apache.org/jira/browse/HDFS-8505
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Archana T
> Assignee: Brahma Reddy Battula
> Priority: Minor
> Attachments: HDFS-8505.patch
>
>
> Truncate should not be success when Truncate Size and Current Size are equal.
> $ ./hdfs dfs -cat /file
> abcdefgh
> $ ./hdfs dfs -truncate -w 2 /file
> Waiting for /file ...
> Truncated /file to length: 2
> $ ./hdfs dfs -cat /file
> ab
> {color:red}
> $ ./hdfs dfs -truncate -w 2 /file
> Truncated /file to length: 2
> {color}
> $ ./hdfs dfs -cat /file
> ab
> Expecting to throw Truncate Error:
> -truncate: Cannot truncate to a larger file size. Current size: 2, truncate
> size: 2
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