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https://issues.apache.org/jira/browse/HIVE-19875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16810184#comment-16810184
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Prasanth Jayachandran commented on HIVE-19875:
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[~klcopp] I reverted the commit from branch-3.0 that breaks the build. Is there
a release planned from branch-3.0?
> increase LLAP IO queue size for perf
> ------------------------------------
>
> Key: HIVE-19875
> URL: https://issues.apache.org/jira/browse/HIVE-19875
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.1.0, 4.0.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Priority: Major
> Fix For: 3.1.0, 4.0.0
>
> Attachments: HIVE-19875.1.patch, HIVE-19875.2.patch
>
>
> According to [~gopalv] queue limit has perf impact, esp. during hashtable
> load for mapjoin where in the past IO used to queue up more data for
> processing to process.
> 1) Overall the default limit could be adjusted higher.
> 2) Depending on Decimal64 availability, the weight for decimal columns could
> be reduced.
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