LantaoJin commented on a change in pull request #31119:
URL: https://github.com/apache/spark/pull/31119#discussion_r555541964
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/BroadcastExchangeExec.scala
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@@ -74,7 +74,9 @@ case class BroadcastExchangeExec(
child: SparkPlan) extends BroadcastExchangeLike {
import BroadcastExchangeExec._
- override val runId: UUID = UUID.randomUUID
+ private val groupId =
sparkContext.getLocalProperty(SparkContext.SPARK_JOB_GROUP_ID)
Review comment:
For STS, I think so. Building this physical plan preformed in a thread
of `HiveServer2-Background-Pool`, the same thread of setting up the job group
Id, parsing, analyzing, and optimizing, etc. Still keeping `UUID.randomUUID` is
to avoid UT failures IIUC.
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