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  1. Flink
  2. FLINK-15004

Choose two-phase Aggregate if the statistics is unknown

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      Currently, blink planner will use default rowCount value (defined in FlinkPreparingTableBase#DEFAULT_ROWCOUNT ) when the statistics is unknown, and maybe choose one-phase Aggregate. The job will hang if the data is skewed. So It's better to use two-phase Aggregate for execution stability if the statistics is unknown.

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              • Assignee:
                godfreyhe godfrey he
                Reporter:
                godfreyhe godfrey he
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