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https://issues.apache.org/jira/browse/SPARK-46590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun closed SPARK-46590.
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> Coalesce partiton assert error after skew join optimization
> -----------------------------------------------------------
>
> Key: SPARK-46590
> URL: https://issues.apache.org/jira/browse/SPARK-46590
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.3.1, 3.3.3, 3.3.2, 3.4.0, 3.4.1, 3.5.0, 3.5.1, 3.3.4,
> 4.0.0
> Reporter: Jackey Lee
> Assignee: Jackey Lee
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.5.1, 4.0.0
>
> Attachments: problem.log
>
>
> Recently when we were testing TPCDS Q71, we found that if
> `spark.sql.shuffle.partitions` and
> `spark.sql.adaptive.coalescePartitions.initialPartitionNum` are both set to
> the number of executor cores, an AssertError may be reported in
> coalescePartition due to the partitionSpecs of joins after skew are different.
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