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https://issues.apache.org/jira/browse/HIVE-8932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14220305#comment-14220305
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Ashutosh Chauhan commented on HIVE-8932:
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An attempt for this was made in HIVE-8558 but in other cases we still fail to
do n-way joins e.g., {{join12.q,ppd_join3.q,ppd_outer_join4.q}}
> Enable n-way join on CBO
> -------------------------
>
> Key: HIVE-8932
> URL: https://issues.apache.org/jira/browse/HIVE-8932
> Project: Hive
> Issue Type: Improvement
> Components: CBO
> Affects Versions: 0.14.0
> Reporter: Ashutosh Chauhan
>
> In some cases (not all ways) with CBO, we don't generate n-way join, when we
> could.
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