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Laurent Goujon updated DRILL-7284: ---------------------------------- Fix Version/s: (was: 1.19.0) > reusing the hashCodes computed at exchange nodes > ------------------------------------------------ > > Key: DRILL-7284 > URL: https://issues.apache.org/jira/browse/DRILL-7284 > Project: Apache Drill > Issue Type: New Feature > Reporter: Weijie Tong > Assignee: Weijie Tong > Priority: Major > > To HashJoin or HashAggregate, we will shuffle the input data according to > hashCodes of join conditions or group by keys at the exchange nodes. This > computing of the hash codes will be redo at the HashJoin or HashAggregate > nodes. We could send the computed hashCodes of exchange nodes to the upper > nodes. So the HashJoin or HashAggregate nodes will not need to do the hash > computing again. -- This message was sent by Atlassian Jira (v8.3.4#803005)