viirya commented on a change in pull request #32033:
URL: https://github.com/apache/spark/pull/32033#discussion_r606312533
##########
File path: core/src/main/scala/org/apache/spark/MapOutputTracker.scala
##########
@@ -953,13 +959,19 @@ private[spark] object MapOutputTracker extends Logging {
case DIRECT =>
deserializeObject(bytes, 1, bytes.length -
1).asInstanceOf[Array[MapStatus]]
case BROADCAST =>
- // deserialize the Broadcast, pull .value array out of it, and then
deserialize that
- val bcast = deserializeObject(bytes, 1, bytes.length - 1).
- asInstanceOf[Broadcast[Array[Byte]]]
- logInfo("Broadcast mapstatuses size = " + bytes.length +
- ", actual size = " + bcast.value.length)
- // Important - ignore the DIRECT tag ! Start from offset 1
- deserializeObject(bcast.value, 1, bcast.value.length -
1).asInstanceOf[Array[MapStatus]]
+ try {
+ // deserialize the Broadcast, pull .value array out of it, and then
deserialize that
+ val bcast = deserializeObject(bytes, 1, bytes.length - 1).
+ asInstanceOf[Broadcast[Array[Byte]]]
+ logInfo("Broadcast mapstatuses size = " + bytes.length +
+ ", actual size = " + bcast.value.length)
Review comment:
This is for the need of writing the test case. In the test case, if we
call `getStatuses`, the mapoutput tracker worker will ask tracker master for
new broadcasted value. So we cannot test the situation we need.
##########
File path:
core/src/main/scala/org/apache/spark/shuffle/FetchFailedException.scala
##########
@@ -68,5 +68,6 @@ private[spark] class FetchFailedException(
private[spark] class MetadataFetchFailedException(
shuffleId: Int,
reduceId: Int,
- message: String)
- extends FetchFailedException(null, shuffleId, -1L, -1, reduceId, message)
+ message: String,
+ cause: Throwable = null)
Review comment:
Sure, I just want to keep original stack trace.
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