Details
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Improvement
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Status: Resolved
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Major
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Resolution: Incomplete
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2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.3.2
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None
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Patch
Description
For SparkSQL ,when we open AE by 'set spark.sql.adapative.enable=true',the ExchangeCoordinator will introduced to determine the number of post-shuffle partitions. But in some certain conditions,the coordinator performed not very well, there are always some tasks retained and they worked with Shuffle Read Size / Records 0.0B/0 ,We could increase the spark.sql.adaptive.shuffle.targetPostShuffleInputSize to solve this,but this action is unreasonable as targetPostShuffleInputSize Should not be set too large. As follow:
We can filter the useless partition(0B) with ExchangeCoorditinator automatically
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