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https://issues.apache.org/jira/browse/SPARK-33472?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-33472:
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Fix Version/s: 2.4.8
> IllegalArgumentException when applying RemoveRedundantSorts before
> EnsureRequirements
> -------------------------------------------------------------------------------------
>
> Key: SPARK-33472
> URL: https://issues.apache.org/jira/browse/SPARK-33472
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.4.8, 3.0.2, 3.1.0
> Reporter: Allison Wang
> Assignee: Allison Wang
> Priority: Major
> Fix For: 2.4.8, 3.0.2, 3.1.0
>
>
> `RemoveRedundantSorts` rule uses SparkPlan's `outputPartitioning` to check
> whether a sort node is redundant. Currently, it is added before
> `EnsureRequirements`. Since `PartitioningCollection` requires left and right
> partitioning to have the same number of partitions, which is not necessarily
> true before applying `EnsureRequirements`, the rule can fail with the
> following exception:
> {{IllegalArgumentException: requirement failed: PartitioningCollection
> requires all of its partitionings have the same numPartitions.}}
> We should switch the order between these two rules to satisfy the requirement
> when instantiating `PartitioningCollection`.
>
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