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From "Daniel Dai (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7209) Extensions to FsShell
Date Mon, 26 Mar 2012 23:00:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13238946#comment-13238946

Daniel Dai commented on HADOOP-7209:

bq. An existing output directory will be silently ignored.
The existing output directory will be removed. But in case of the directory does not exist,
rmdir --ignore-fail-on-non-empty silently ignore and continue with the MR job.
> Extensions to FsShell
> ---------------------
>                 Key: HADOOP-7209
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7209
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 0.20.3
>            Reporter: Olga Natkovich
>            Assignee: Daryn Sharp
>             Fix For: 0.24.0
> Our project, Pig, exposes FsShell functionality to our end users through a shell command.
We want to use this command with no modifications to make sure that whether you work with
HDFS through Hadoop or Pig you get identical semantics.
> The main concern that has been recently raised by our users is that there is no way to
ignore certain failures that they consider to be benign, for instance, removing a non-existent
> We have 2 asks related to this issue:
> (1) Meaningful error code returned from FsShell (we use java class) so that we can take
different actions on different errors
> (2) Unix like ways to tell the command to ignore certain behavior. Here are the commands
that we would like to be expanded/implemented:
>    * rm -f
>    * rmdir ---ignore-fail-on-non-empty
>    * mkdir -p 

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