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https://issues.apache.org/jira/browse/HIVE-9736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14518834#comment-14518834
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Mithun Radhakrishnan commented on HIVE-9736:
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Hello, Chris.
bq. ... we can combine the multiple actions by using FsAction#or, and then call
accessMethod.invoke just once...
Yikes! I might've missed incorporating that suggestion by accident. Thank you
for following up. I'll update the patch shortly.
> StorageBasedAuthProvider should batch namenode-calls where possible.
> --------------------------------------------------------------------
>
> Key: HIVE-9736
> URL: https://issues.apache.org/jira/browse/HIVE-9736
> Project: Hive
> Issue Type: Bug
> Components: Metastore, Security
> Reporter: Mithun Radhakrishnan
> Assignee: Mithun Radhakrishnan
> Attachments: HIVE-9736.1.patch, HIVE-9736.2.patch, HIVE-9736.3.patch
>
>
> Consider a table partitioned by 2 keys (dt, region). Say a dt partition could
> have 10000 associated regions. Consider that the user does:
> {code:sql}
> ALTER TABLE my_table DROP PARTITION (dt='20150101');
> {code}
> As things stand now, {{StorageBasedAuthProvider}} will make individual
> {{DistributedFileSystem.listStatus()}} calls for each partition-directory,
> and authorize each one separately. It'd be faster to batch the calls, and
> examine multiple FileStatus objects at once.
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