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https://issues.apache.org/jira/browse/HADOOP-3526?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Spyros Blanas updated HADOOP-3526:
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Attachment: patch
Chris,
The tag needs cloning, because it's stored as a key in the SortedMap.
Otherwise, the Text.equals() method always returns true (see HADOOP-3522).
As for the WritableUtils.clone() suggestion, I upload a new version of the
patch which incorporates it.
Nigel,
Unfortunately there is no existing JUnit test covering the contributed
data_join code and I don't know how to change the build.xml file to run the new
tests. Also, building a JUnit testing framework for generic map-reduce jobs
like data_join is much more difficult than targeting specific functions, as
done in the core. I would be happy to create a test if you can point me to some
code that tests a generic map/reduce job that I can tweak.
> 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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