Github user zsxwing commented on a diff in the pull request: https://github.com/apache/spark/pull/18565#discussion_r126242905 --- Diff: common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/OneForOneBlockFetcher.java --- @@ -151,15 +152,27 @@ private void failRemainingBlocks(String[] failedBlockIds, Throwable e) { } } + private static synchronized boolean renameFile(File src, File dest) { + if (dest.exists()) { + if (!dest.delete()) { --- End diff -- In addition, you don't need to use `synchronized` on a static method.
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