Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20931#discussion_r179651037
--- Diff:
core/src/main/scala/org/apache/spark/internal/io/HadoopMapReduceCommitProtocol.scala
---
@@ -186,7 +186,9 @@ class HadoopMapReduceCommitProtocol(
logDebug(s"Clean up default partition directories for overwriting:
$partitionPaths")
for (part <- partitionPaths) {
val finalPartPath = new Path(path, part)
- fs.delete(finalPartPath, true)
+ if (!fs.delete(finalPartPath, true) &&
!fs.exists(finalPartPath.getParent)) {
--- End diff --
I think the problem here is we didn't check whether the `finalPartPath`
exists, and we shall actually check that before rename.
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