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https://issues.apache.org/jira/browse/IMPALA-8302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16790725#comment-16790725
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Michael Ho commented on IMPALA-8302:
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[~lv], please see IMPALA-6692.
> Data stream senders should buffer limited amount of data when receivers block
> -----------------------------------------------------------------------------
>
> Key: IMPALA-8302
> URL: https://issues.apache.org/jira/browse/IMPALA-8302
> Project: IMPALA
> Issue Type: Bug
> Components: Backend, Distributed Exec
> Affects Versions: Impala 3.2.0
> Reporter: Lars Volker
> Priority: Major
>
> Exchanges into blocking nodes (e.g. sort nodes during run formation) can
> block the whole execution if a single node blocks. Data stream senders should
> buffer a limited amount of data to allow more sort nodes to start sorting
> their data. Possible options would be a fixed amount of buffer size, or a
> size relative to the sort node run size.
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