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https://issues.apache.org/jira/browse/HIVE-1792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12935399#action_12935399
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Namit Jain commented on HIVE-1792:
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Why dont we do the same in plan/ConditionalResolverCommonJoin - there we know 
what is going on ?

Also, can we remove the unrelated changes -- for eg. using a different 
DistributedCache API etc. in this patch

> track the joins which are being converted to map-join automatically
> -------------------------------------------------------------------
>
>                 Key: HIVE-1792
>                 URL: https://issues.apache.org/jira/browse/HIVE-1792
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor
>    Affects Versions: 0.7.0
>            Reporter: Liyin Tang
>            Assignee: Liyin Tang
>             Fix For: 0.7.0
>
>         Attachments: hive-1792-1.patch, hive-1792-2.patch, hive-1792-3.patch
>
>
> We should be able to track how many queries (join) got converted to
> map-join

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