Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18714#discussion_r128912524
--- Diff:
core/src/main/scala/org/apache/spark/internal/io/HadoopMapReduceCommitProtocol.scala
---
@@ -71,10 +84,14 @@ class HadoopMapReduceCommitProtocol(jobId: String,
path: String)
taskContext: TaskAttemptContext, dir: Option[String], ext: String):
String = {
val filename = getFilename(taskContext, ext)
- val stagingDir: String = committer match {
+ val stagingDir: Path = committer match {
+ case _ if runtimeOverwritePartition =>
+ assert(dir.isDefined)
--- End diff --
Added an error message just in case the assert does not match? It helps us
read the log.
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