RexXiong commented on code in PR #3360:
URL: https://github.com/apache/celeborn/pull/3360#discussion_r2196380751
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worker/src/main/scala/org/apache/celeborn/service/deploy/worker/storage/TierWriter.scala:
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@@ -643,13 +643,26 @@ class DfsTierWriter(
hadoopFs.delete(hdfsFileInfo.getDfsPath, false)
deleted = true
} else {
- hadoopFs.create(hdfsFileInfo.getDfsWriterSuccessPath).close()
- val indexOutputStream = hadoopFs.create(hdfsFileInfo.getDfsIndexPath)
-
indexOutputStream.writeInt(hdfsFileInfo.getReduceFileMeta.getChunkOffsets.size)
- for (offset <- hdfsFileInfo.getReduceFileMeta.getChunkOffsets.asScala) {
- indexOutputStream.writeLong(offset)
+ var retryCount = 0
+ while (retryCount < conf.workerCreateIndexMaxAttempts &&
!hadoopFs.exists(hdfsFileInfo.getDfsWriterSuccessPath)) {
+ try {
+ if (hadoopFs.exists(hdfsFileInfo.getDfsIndexPath)) {
+ hadoopFs.delete(hdfsFileInfo.getDfsIndexPath, true)
+ }
+ val indexOutputStream = hadoopFs.create(hdfsFileInfo.getDfsIndexPath)
+
indexOutputStream.writeInt(hdfsFileInfo.getReduceFileMeta.getChunkOffsets.size)
+ for (offset <-
hdfsFileInfo.getReduceFileMeta.getChunkOffsets.asScala) {
+ indexOutputStream.writeLong(offset)
+ }
+ indexOutputStream.close()
+ hadoopFs.create(hdfsFileInfo.getDfsWriterSuccessPath).close()
Review Comment:
If creating the success path results in an IOException, it will lead to
unnecessary retries for creating the index file. Therefore, it would be better
to implement a retry for IOException during both the creation of the index
file and the success path.
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