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https://issues.apache.org/jira/browse/DRILL-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16510887#comment-16510887
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ASF GitHub Bot commented on DRILL-6491:
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vvysotskyi commented on issue #1320: DRILL-6491: Prevent merge join for full
outer join at planning stage
URL: https://github.com/apache/drill/pull/1320#issuecomment-396879039
Could you please add unit tests to check that plan with full outer merge
join will be omitted for the case when it was chosen before your changes?
Also, it would be good to add more detailed description of the problem into
the Jira.
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> Prevent merge join for full outer join at planning stage
> --------------------------------------------------------
>
> Key: DRILL-6491
> URL: https://issues.apache.org/jira/browse/DRILL-6491
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.13.0
> Reporter: Bohdan Kazydub
> Assignee: Bohdan Kazydub
> Priority: Minor
> Fix For: 1.14.0
>
>
> Currently, planner may choose merge join for full outer join for the case
> when another join types are enabled. When planner chooses merge join for full
> outer join an error is thrown when {{MergeJoinPOP}} is being created.
> To fix this issue, the infinite cost should be set for merge rel node for the
> case when join type is full outer join.
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