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https://issues.apache.org/jira/browse/HADOOP-4416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12639795#action_12639795
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Steve Loughran commented on HADOOP-4416:
----------------------------------------
This is an instance of HADOOP-4212; a .trim() does seem appropriate here,
assuming that HADOOP-4212 is going to remain open or wontfix.
> class names in Configuration are not resolved if the configuration value has
> a white space
> -------------------------------------------------------------------------------------------
>
> Key: HADOOP-4416
> URL: https://issues.apache.org/jira/browse/HADOOP-4416
> Project: Hadoop Core
> Issue Type: Bug
> Environment: all
> Reporter: Alejandro Abdelnur
> Fix For: 0.19.0
>
>
> If an entry in the configuration used for a class contains spaces or enters
> before or after the {{getClass}} and {{getClasses}} methods fail to resolve
> the class.
> For example:
> {code}
> <property>
> <name>mapred.mapper.class</name>
> <value>
> com.foo.MyMapper
> </value>
> </property>
> {code}
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