zhangshuyan0 commented on code in PR #5847:
URL: https://github.com/apache/hadoop/pull/5847#discussion_r1266096591


##########
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ViewFileSystem.java:
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@@ -1926,12 +1926,41 @@ enum RenameStrategy {
     SAME_FILESYSTEM_ACROSS_MOUNTPOINT
   }
 
+  private void closeChildFileSystems(FileSystem fs) throws IOException {
+    if (fs != null) {
+      FileSystem[] childFs = fs.getChildFileSystems();
+      for (FileSystem child : childFs) {

Review Comment:
   I think so. It does not need to be parallelized.



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