dbtsai 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_r294404215
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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:
`@transient private lazy val selectedPartitions: Seq[PartitionDirectory]` is
returning type of `Seq`.
Since it's `lazy val` and used many times in the life cycle, why not we make
it `@transient private lazy val selectedPartitions: Array[PartitionDirectory]`?
Then, `toArray` can be removed.
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