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https://issues.apache.org/jira/browse/HBASE-10061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836347#comment-13836347
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Amit Sela commented on HBASE-10061:
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Take a look at https://issues.apache.org/jira/browse/HBASE-8158
I think throwing Exception if jar was not found was introduced there.
> TableMapReduceUtil.findOrCreateJar calls updateMap(null, ) resulting in
> thrown NPE
> ----------------------------------------------------------------------------------
>
> Key: HBASE-10061
> URL: https://issues.apache.org/jira/browse/HBASE-10061
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 0.94.12
> Reporter: Amit Sela
>
> TableMapReduceUtil.findOrCreateJar line 596:
> jar = getJar(my_class);
> updateMap(jar, packagedClasses);
> In case getJar returns null, updateMap will throw NPE.
> Should check null==jar before calling updateMap.
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