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Posted to issues-all@impala.apache.org by "Lars Volker (JIRA)" <ji...@apache.org> on 2019/03/12 15:47:00 UTC

[jira] [Created] (IMPALA-8302) Data stream senders should buffer limited amount of data when receivers block

Lars Volker created IMPALA-8302:
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             Summary: 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


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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