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  1. IMPALA
  2. IMPALA-8137

Order by docs incorrectly state that order by happens on one node

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: Impala 3.2.0
    • Component/s: Docs
    • Labels:
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      Description

      https://impala.apache.org/docs/build/html/topics/impala_order_by.html

      "because the entire result set must be produced and transferred to one node before the sorting can happen." is incorrect. If there is an "ORDER BY" clause in a select block, then first data is sorted locally by each impala daemon, then streamed to the coordinator, which merges the sorted result sets.

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            • Assignee:
              arodoni Alexandra Rodoni
              Reporter:
              tarmstrong Tim Armstrong
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                Updated:
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