[jira] [Commented] (HADOOP-10998) Fix bash tab completion code to work

["Hudson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-10998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14107258#comment-14107258 ] 

Hudson commented on HADOOP-10998:
---------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #6100 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/6100/])
HADOOP-10998. Fix bash tab completion code to work (Jim Hester via aw) (aw: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1619887)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/contrib/bash-tab-completion/hadoop.sh


> Fix bash tab completion code to work
> ------------------------------------
>
>                 Key: HADOOP-10998
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10998
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: scripts
>         Environment: Hadoop 2.0.0-cdh4.2.1
>            Reporter: Jim Hester
>            Assignee: Jim Hester
>            Priority: Trivial
>             Fix For: 3.0.0, 2.6.0
>
>         Attachments: HADOOP-10998.patch
>
>
> The included version of bash completion has not been updated in almost two years and does not work correctly with more recent versions of Hadoop.
> The command substitutions in the script were using backticks, which were interpolating variables before they were executed and breaking the script.  In particular the awk commands were breaking due to this interpolation.
> The attached patch changes the backticks to {{$(command)}} style for command substitution and updates the script to work properly with newer versions of hadoop.
> I tested the script using {{zsh 5.0.5}}, {{zsh 4.3.10]}, {{bash-4.1.2}} and {{bash-3.2}}.  Hadoop versions tested were cloudera version {{2.0.0-cdh4.2.1}} and briefly Apache {{2.5.0}}.



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