Github user bersprockets commented on a diff in the pull request:
https://github.com/apache/spark/pull/21899#discussion_r211833522
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/BroadcastExchangeExec.scala
---
@@ -118,12 +119,20 @@ case class BroadcastExchangeExec(
// SparkFatalException, which is a subclass of Exception.
ThreadUtils.awaitResult
// will catch this exception and re-throw the wrapped fatal
throwable.
case oe: OutOfMemoryError =>
- throw new SparkFatalException(
+ val sizeMessage = if (dataSize != -1) {
+ s"${SparkLauncher.DRIVER_MEMORY} by at least the estimated
size of the " +
+ s"relation ($dataSize bytes)"
--- End diff --
Hmmm.. good question. I will check.
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