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From "John Gordon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4377) TaskRunner javaopts parsing doesn't handle embedded spaces
Date Wed, 27 Jun 2012 18:41:44 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402452#comment-13402452
] 

John Gordon commented on MAPREDUCE-4377:
----------------------------------------

Thanks Robert!  I agree it won't be an easy fix and may need some rearchitecture and significant
test additions.
                
> TaskRunner javaopts parsing doesn't handle embedded spaces
> ----------------------------------------------------------
>
>                 Key: MAPREDUCE-4377
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4377
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: task-controller
>    Affects Versions: trunk
>         Environment: java options containing escaped or non-escaped embedded spaces.
>            Reporter: John Gordon
>
> TaskRunner::GetVMArgs reads getChildJavaOpts as one space-delimited string, then split
is on ' ' and tries to reason on individual options from there.  The problem with this approach
is that java options may contain embedded spaces in many legitimate cases -- this means it
is reasoning on incomplete option strings and cannot do appropriate preprocessing to do things
like handle escape characters or matched quotation marks.

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