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https://issues.apache.org/jira/browse/HADOOP-3526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12605428#action_12605428
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Chris Douglas commented on HADOOP-3526:
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bq. The tag needs cloning, because it's stored as a key in the SortedMap.
Otherwise, the Text.equals() method always returns true
Sorry, I mean it doesn't need to be cloned there, for the lookup. Since the
record needs to be cloned anyway and it includes the tag, it should be
sufficient to clone the record and use the tag for the map key.
> contrib/data_join doesn't work
> ------------------------------
>
> Key: HADOOP-3526
> URL: https://issues.apache.org/jira/browse/HADOOP-3526
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.17.0
> Reporter: Spyros Blanas
> Assignee: Spyros Blanas
> Priority: Blocker
> Fix For: 0.17.1
>
> Attachments: patch
>
>
> The example in the README.txt in contrig/data_join/src/example doesn't work
> in 0.17.0. It works perfectly in 0.16.4.
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