wankunde commented on code in PR #37922:
URL: https://github.com/apache/spark/pull/37922#discussion_r1051520374
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common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/RemoteBlockPushResolver.java:
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@@ -702,7 +722,8 @@ public MergeStatuses
finalizeShuffleMerge(FinalizeShuffleMerge msg) {
"finalizing shuffle partition {}", msg.appId,
msg.appAttemptId, msg.shuffleId,
msg.shuffleMergeId, partition.reduceId);
} finally {
- partition.closeAllFilesAndDeleteIfNeeded(false);
+ Boolean deleteFile = partition.mapTracker.getCardinality() == 0;
+ partition.closeAllFilesAndDeleteIfNeeded(deleteFile);
Review Comment:
Won't return the reduceId which `partition.mapTracker.getCardinality() ==
0`, so we can `closeAllFilesAndDeleteIfNeeded` now.
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