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Make broadcast future package-private and add a flag allowing to check if it is initialized #156

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Merged
markhamstra merged 1 commit into from
Feb 29, 2016
Merged

Make broadcast future package-private and add a flag allowing to check if it is initialized #156

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7 changes: 6 additions & 1 deletion sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoin.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -62,10 +62,15 @@ case class BroadcastHashJoin(
override def requiredChildDistribution: Seq[Distribution] =
UnspecifiedDistribution :: UnspecifiedDistribution :: Nil

@transient
@volatile
private[joins] var broadcastFutureInitialized = false

// Use lazy so that we won't do broadcast when calling explain but still cache the broadcast value
// for the same query.
@transient
private lazy val broadcastFuture = {
private[joins] lazy val broadcastFuture = {
broadcastFutureInitialized = true
val numBuildRows = buildSide match {
case BuildLeft => longMetric("numLeftRows")
case BuildRight => longMetric("numRightRows")
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