AngersZhuuuu opened a new pull request #28098: 
[SPARK-30973][SQL]ScriptTransformationExec should wait for the termination
URL: https://github.com/apache/spark/pull/28098
 
 
   ### What changes were proposed in this pull request?
   In  `org.apache.spark.sql.hive.execution.ScriptTransformationExec`, when 
check error, sometimes we can't catch write error in subproc, when call 
`checkFailureAndPropagate` we should always wait for subproc stop
   
   
   ### Why are the changes needed?
   Catch error in script transform
   
   
   ### Does this PR introduce any user-facing change?
   NO
   
   ### How was this patch tested?
   Added UT

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