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https://issues.apache.org/jira/browse/HIVE-8913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242145#comment-14242145
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Rui Li commented on HIVE-8913:
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I think the call path should be {{ExecMapperContext.clear -> IOContext.clear}}?
And maybe it should be done in reduce record handler as well.
> Make SparkMapJoinResolver handle runtime skew join [Spark Branch]
> -----------------------------------------------------------------
>
> Key: HIVE-8913
> URL: https://issues.apache.org/jira/browse/HIVE-8913
> Project: Hive
> Issue Type: Improvement
> Components: Spark
> Reporter: Rui Li
> Assignee: Rui Li
> Attachments: HIVE-8913.1-spark.patch, HIVE-8913.2-spark.patch
>
>
> Sub-task of HIVE-8406.
> Now we have {{SparkMapJoinResolver}} in place. But at the moment, it doesn't
> handle the map join task created by upstream SkewJoinResolver, i.e. those
> wrapped in a ConditionalTask. We have to implement this part for runtime skew
> join to work on spark. To do so, we can borrow logic from {{MapJoinResolver}}.
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