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https://issues.apache.org/jira/browse/HDFS-16816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17624784#comment-17624784
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ASF GitHub Bot commented on HDFS-16816:
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mkuchenbecker commented on code in PR #5071:
URL: https://github.com/apache/hadoop/pull/5071#discussion_r1006258981
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterClientProtocol.java:
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@@ -734,6 +806,11 @@ public boolean mkdirs(String src, FsPermission masked,
boolean createParent)
new Class<?>[] {String.class, FsPermission.class, boolean.class},
new RemoteParam(), masked, createParent);
+ // Auto-create user home dir for a trash path.
+ // moveToTrash() will first call fs.mkdirs() to create the parent dir,
before calling rename()
+ // to move the file into it. As a result, we need to create user home dir
in mkdirs().
+ createUserHomeForTrashPath(src, locations);
Review Comment:
Should this be a flag so we enable it via config?
> RBF: auto-create user home dir for trash paths by router
> --------------------------------------------------------
>
> Key: HDFS-16816
> URL: https://issues.apache.org/jira/browse/HDFS-16816
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Reporter: Xing Lin
> Priority: Minor
> Labels: pull-request-available
>
> In RBF, trash files are moved to trash root under user's home dir at the
> corresponding namespace/namenode where the files reside. This was added in
> HDFS-16024. When the user home dir is not created before-hand at a namenode,
> we run into permission denied exceptions when trying to create the parent dir
> for the trash file before moving the file into it. We propose to enhance
> Router, to auto-create a user home's dir at the namenode for trash paths,
> using router's identity (which is assumed to be a super-user).
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