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https://issues.apache.org/jira/browse/IMPALA-9126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-9126.
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Fix Version/s: Impala 3.4.0
Resolution: Fixed
> Cleanly separate build and probe state in hash join node
> --------------------------------------------------------
>
> Key: IMPALA-9126
> URL: https://issues.apache.org/jira/browse/IMPALA-9126
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Reporter: Tim Armstrong
> Assignee: Tim Armstrong
> Priority: Major
> Labels: multithreading
> Fix For: Impala 3.4.0
>
>
> As a precursor to IMPALA-4224, we should clean up the hash join
> implementation so that the build and probe state is better separated. The
> builder should not deal with probe side data structures (like the probe
> streams that it allocates) and all accesses to the build-side data structures
> should go through as narrow APIs as possible.
> The nested loop join is already pretty clean.
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