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https://issues.apache.org/jira/browse/HIVE-15030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-15030 started by Jesus Camacho Rodriguez.
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> Fixes in inference of collation for Tez cost model
> --------------------------------------------------
>
> Key: HIVE-15030
> URL: https://issues.apache.org/jira/browse/HIVE-15030
> Project: Hive
> Issue Type: Bug
> Components: Statistics
> Affects Versions: 2.1.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-15030.patch
>
>
> Tez cost model might get NPE if collation returned by join algorithm is null.
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