smengcl commented on a change in pull request #2472:
URL: https://github.com/apache/hadoop/pull/2472#discussion_r526536143
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File path:
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/HdfsAdmin.java
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@@ -171,7 +174,15 @@ public void clearQuotaByStorageType(Path src, StorageType
type) throws IOExcepti
public void allowSnapshot(Path path) throws IOException {
dfs.allowSnapshot(path);
if (dfs.isSnapshotTrashRootEnabled()) {
- dfs.provisionSnapshotTrash(path, TRASH_PERMISSION);
+ try {
+ dfs.provisionSnapshotTrash(path, TRASH_PERMISSION);
+ } catch (FileAlreadyExistsException ex) {
+ // Don't throw on FileAlreadyExistsException since it is likely due to
+ // admin allowing snapshot on an EZ root.
+ LOG.warn(ex.getMessage());
Review comment:
Thanks @bshashikant for the comment.
I was intending to not change the behavior of `DFS#provisionSnapshotTrash`
but as I think again changing it should be fine since 3.4.0 is not released yet.
I will update the PR a bit later.
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