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https://issues.apache.org/jira/browse/MAPREDUCE-4197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13262306#comment-13262306
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Ravi Prakash commented on MAPREDUCE-4197:
-----------------------------------------

Hi Eli! Its actually the mapreduce-examples which need the hsqldb Server class. 
However, hadoop-mapreduce-dist.xml (in hadoop-assemblies) seems to package only 
the dependencies in hadoop-mapreduce/pom.xml . 
(hadoop-mapreduce-examples/pom.xml already has hsqldb listed as a dependency, 
but its still not getting packaged in the tarball)

The test results from Hadoop QA are spurious. I ran both of them on my local 
machine and they passed. I suspect they failed because .m2 cache needs to be 
refreshed after MAPREDUCE-3942 went in. No tests were included because this is 
a change only in the pom.xml file.
                
> Include the hsqldb jar in the hadoop-mapreduce tar file
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-4197
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4197
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.23.1
>            Reporter: Ravi Prakash
>            Assignee: Ravi Prakash
>         Attachments: MAPREDUCE-4197.patch
>
>
> Courtesy Brahma
> {quote}
> In the previuos hadoop releases(20.XX) hsqldb was provided.
> But in hadoop-2.0.0 it is not present.Is it intentionally deleted or missing?
> {quote}

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