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  1. Flink
  2. FLINK-11973

computeSelfCost method should not return null to avoid NPE

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      Description

      Currently, many `computeSelfCost` methods return null if some kind of metadata is unavailable. That will throw NPE in Calcite.

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              • Assignee:
                Unassigned
                Reporter:
                godfreyhe godfrey he
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