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https://issues.apache.org/jira/browse/IMPALA-14850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18067998#comment-18067998
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Balazs Hevele commented on IMPALA-14850:
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Patch https://gerrit.cloudera.org/#/c/24089/
> Codegen tuple copy for Hash Join
> --------------------------------
>
> Key: IMPALA-14850
> URL: https://issues.apache.org/jira/browse/IMPALA-14850
> Project: IMPALA
> Issue Type: Sub-task
> Components: Backend
> Reporter: Balazs Hevele
> Assignee: Balazs Hevele
> Priority: Major
> Labels: codegen, performance
>
> Add codegen for BufferedTupleStream::DeepCopy, and use it for PhjBuilder.
> If possible, use common deepcopy functions with other systems (e.g.
> Tuple::TryDeepCopy*).
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