Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/13189#discussion_r66345250
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/BroadcastExchangeExec.scala
---
@@ -92,6 +93,14 @@ case class BroadcastExchangeExec(
val broadcasted = sparkContext.broadcast(relation)
longMetric("broadcastTime") += (System.nanoTime() -
beforeBroadcast) / 1000000
+
+ // There are some cases we don't care about the metrics and call
`SparkPlan.doExecute`
+ // directly without setting an execution id. We should be tolerant
to it.
+ if (executionId != null) {
--- End diff --
it can be null for some cases, see
https://github.com/apache/spark/pull/13189#issuecomment-224450749
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