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https://issues.apache.org/jira/browse/HADOOP-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12487921
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Doug Cutting commented on HADOOP-1114:
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> Currently our hadoop jars also depend on non-java code which can't be
> distributed via jar.
Job jar files are unpacked in the directory where the job jvm is run, so
non-java data and code in the jar file can be easily accessed via relative
paths.
> we would just need to write a combine-jar tool
Ant has good tools for constructing jar files.
In any case, if you like to install all your software in a separate directory,
and want parts of it to appear on the classpath of the Hadoop daemons, that's
fine. I just think our scripts should not rely on the overused CLASSPATH
environment variable, but would be less fragile if they use HADOOP_CLASSPATH.
> bin/hadoop script clobbers CLASSPATH
> ------------------------------------
>
> Key: HADOOP-1114
> URL: https://issues.apache.org/jira/browse/HADOOP-1114
> Project: Hadoop
> Issue Type: Bug
> Components: scripts
> Affects Versions: 0.12.0
> Reporter: Michael Bieniosek
> Priority: Minor
> Fix For: 0.13.0
>
> Attachments: hadoop-no-clobber-classpath.patch
>
>
> The bin/hadoop script distributed with hadoop clobbers the user's CLASSPATH.
> This prevents ad-hoc appending to the CLASSPATH.
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