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https://issues.apache.org/jira/browse/HIVE-6588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13932624#comment-13932624
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Szehon Ho commented on HIVE-6588:
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Just wanted to share my experience, a lot of these are caused by MAPREDUCE-434
which is in hadoop 2.3.0, hive MR jobs in test env had been running only one
reducer in local mode, now suddenly there are more.
I think the majority of these can be fixed by adding a group-by, or having a
different version of the test for hadoop1,2 versions for others, like those
asserting number of buckets. Will try to fix some if I get some cycles.
> Unit test failures with hadoop-2
> --------------------------------
>
> Key: HIVE-6588
> URL: https://issues.apache.org/jira/browse/HIVE-6588
> Project: Hive
> Issue Type: Bug
> Components: Tests
> Reporter: Jason Dere
>
> A number of tests are failing with -Phadoop-2
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