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From "Ahmed Radwan (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4101) nodemanager depends on /bin/bash
Date Thu, 12 Apr 2012 20:19:17 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13252795#comment-13252795
] 

Ahmed Radwan commented on MAPREDUCE-4101:
-----------------------------------------

It think it is cleaner to avoid hardcoding the commands and have it configurable with the
default in *-default.xml.
                
> nodemanager depends on /bin/bash
> --------------------------------
>
>                 Key: MAPREDUCE-4101
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4101
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 0.23.1, trunk
>         Environment: FreeBSD 8.2 / 64 bit
>            Reporter: Radim Kolar
>              Labels: patch
>         Attachments: bash-replace-by-sh.txt
>
>
> Currently nodemanager depends on bash shell. It should be well documented for system
not having bash installed by default such as FreeBSD. Because only basic functionality of
bash is used, probably changing bash to /bin/sh would work enough.
> i found 2 cases:
> 1. DefaultContainerExecutor.java creates file with /bin/bash hardcoded in writeLocalWrapperScript.
(this needs bash in /bin)
> 2. yarn-hduser-nodemanager-ponto.amerinoc.com.log:2012-04-03 19:50:10,798 INFO org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor:
launchContainer: [bash, -c, /tmp/nm-local-dir/usercache/hduser/appcache/application_1333474251533_0002/container_1333474251533_0002_01_000012/default_container_executor.sh]
> this created script is also launched by bash - bash anywhere in path works - in freebsd
it is /usr/local/bin/bash

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