parthchandra commented on a change in pull request #24865: [SPARK-27100][SQL]
dag-scheduler-event-loop" java.lang.StackOverflowError
URL: https://github.com/apache/spark/pull/24865#discussion_r294562285
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/DataSourceScanExec.scala
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@@ -381,7 +381,7 @@ case class FileSourceScanExec(
fsRelation: HadoopFsRelation): RDD[InternalRow] = {
logInfo(s"Planning with ${bucketSpec.numBuckets} buckets")
val filesGroupedToBuckets =
- selectedPartitions.flatMap { p =>
+ selectedPartitions.toArray.flatMap { p =>
Review comment:
Could `filePartitions` be a large list and run into the same serialization
issue if we don't convert it into an array? Doesn't look likely, but I'd like
to be sure.
Also, @DBTsai suggested ` @transient private lazy val selectedPartitions:
Array[PartitionDirectory] = {`. Do we want to do that?
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