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https://issues.apache.org/jira/browse/HADOOP-7795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13190617#comment-13190617
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Harsh J commented on HADOOP-7795:
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Xie,
Have you ever needed this? How often have you come across data files on HDFS
that you needed to get line number references of?
Given other tools out there already do this and -cat output can interface with
them (well maybe a little inefficient but don't think it'd even matter), I'd
not want to rebuild the whole of coreutils' cat featureset inside Hadoop.
I'm inclined to close this as won't fix unless I hear strong reasons on why we
ought to be building this in.
> add -n option for FSshell cat
> -----------------------------
>
> Key: HADOOP-7795
> URL: https://issues.apache.org/jira/browse/HADOOP-7795
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 0.24.0
> Reporter: XieXianshan
> Assignee: XieXianshan
> Fix For: 0.24.0
>
> Attachments: HADOOP-7795.patch
>
>
> Add -n option for cat to display the files with line numbers.It's quite
> useful if you're reading big files.
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