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https://issues.apache.org/jira/browse/HIVE-14208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15371404#comment-15371404
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Jesus Camacho Rodriguez commented on HIVE-14208:
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Cc [~ashutoshc]
> MapJoin uses key of outer input and Converter
> ---------------------------------------------
>
> Key: HIVE-14208
> URL: https://issues.apache.org/jira/browse/HIVE-14208
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Affects Versions: 2.2.0
> Reporter: Jesus Camacho Rodriguez
> Priority: Minor
>
> Consider an left outer MapJoin operator. OI for the outputs are created from
> outer and inner side from their inputs. However, when there is a match in the
> join, the data for the key is always taken from the outer side (as it is done
> currently). Thus, we need to apply the Converter logic on the data to get the
> correct type.
> This issue is to explore whether a better solution would be to use the key
> from correct inputs of the join to eliminate need of Converters.
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