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  1. IMPALA
  2. IMPALA-8302

Data stream senders should buffer limited amount of data when receivers block

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: Impala 3.2.0
    • Fix Version/s: None
    • Component/s: Backend, Distributed Exec
    • Labels:
      None
    • Epic Color:
      ghx-label-6

      Description

      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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          is duplicated by

          Sub-task - The sub-task of the issue IMPALA-6692 When partition exchange is followed by sort each sort node becomes a synchronization point across the cluster

          • Critical - Crashes, loss of data, severe memory leak.
          • Open

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              • Assignee:
                Unassigned
                Reporter:
                lv Lars Volker
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                Dates

                • Created:
                  Updated:
                  Resolved: