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Posted to issues@spark.apache.org by "junbiao chen (Jira)" <ji...@apache.org> on 2021/12/07 09:45:00 UTC

[jira] [Created] (SPARK-37567) reuse Exchange failed

junbiao chen created SPARK-37567:
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             Summary: reuse Exchange failed 
                 Key: SPARK-37567
                 URL: https://issues.apache.org/jira/browse/SPARK-37567
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.1.1
            Reporter: junbiao chen


use case：query2 in TPC-DS.There are three exchange subquery will scan the same table "store_sales" in logical plan,these subqueries meet exchange reuse rule.I confirm that the exchange use rule  work in physical plan.But when spark execute the physical plan,I find out 

exchange reuse failed,reused exchange has been executed twice.

physical plan:

!image-2021-12-07-17-39-10-548.png!

 

executed stage:

!image-2021-12-07-17-43-51-449.png!

 

!image-2021-12-07-17-43-19-401.png!



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