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https://issues.apache.org/jira/browse/HIVE-24685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17272455#comment-17272455
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Jesus Camacho Rodriguez commented on HIVE-24685:
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https://github.com/apache/hive/pull/1878
> Remove HiveSubQRemoveRelBuilder
> -------------------------------
>
> Key: HIVE-24685
> URL: https://issues.apache.org/jira/browse/HIVE-24685
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
>
> The class seems to be a close clone of {{RelBuilder}} created due to some
> bugs existing in original implementation. Those issues seem to be fixed now
> and we should be able to get rid of the copy. In the worst case scenario, if
> we need to keep it for the time being, we could try to make it extend
> {{RelBuilder}} and override only necessary methods.
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