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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8386) hadoop script doesn't work if 'cd' prints to stdout (default behavior in Ubuntu)
Date Thu, 27 Sep 2012 07:00:09 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13464503#comment-13464503
] 

Harsh J commented on HADOOP-8386:
---------------------------------

Interesting, thanks! This is from my zsh instance (CDPATH is preset to . in it already):

{code}
➜  ~  echo $CDPATH
.
➜  ~  cd /
➜  /  cd etc
➜  /etc  cd
➜  ~  unset CDPATH
➜  ~  cd /
➜  /  cd etc
➜  /etc  cd
➜  ~  
{code}

And from bash:

{code}
➜  ~  bash
bash-3.2$ echo $CDPATH

bash-3.2$ cd /
bash-3.2$ cd etc
bash-3.2$ export CDPATH=.
bash-3.2$ cd /
bash-3.2$ cd etc
/etc
bash-3.2$ 
{code}

                
> hadoop script doesn't work if 'cd' prints to stdout (default behavior in Ubuntu)
> --------------------------------------------------------------------------------
>
>                 Key: HADOOP-8386
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8386
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 1.0.2
>         Environment: Ubuntu
>            Reporter: Christopher Berner
>         Attachments: hadoop.diff
>
>
> if the 'hadoop' script is run as 'bin/hadoop' on a distro where the 'cd' command prints
to stdout, the script will fail due to this line: 'bin=`cd "$bin"; pwd`'
> Workaround: execute from the bin/ directory as './hadoop'
> Fix: change that line to 'bin=`cd "$bin" > /dev/null; pwd`'

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