zhangshuyan0 commented on code in PR #5847:
URL: https://github.com/apache/hadoop/pull/5847#discussion_r1264884503
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/InodeTree.java:
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@@ -413,6 +413,11 @@ public T getTargetFileSystem() throws IOException {
}
return targetFileSystem;
}
+
+ T getTargetFileSystemForClose() throws IOException {
Review Comment:
Some target FileSystem may not have be initialized. `getTargetFileSystem`
initializes all target FileSystems (line1039 below). It's costly and
unnecessary when we just try to close them.
https://github.com/apache/hadoop/blob/c44823dadb73a3033f515329f70b2e3126fcb7be/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ViewFileSystem.java#L1036-L1039
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