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https://issues.apache.org/jira/browse/HIVE-9736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14534035#comment-14534035
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Lefty Leverenz commented on HIVE-9736:
--------------------------------------
Doc note: This adds configuration parameter
*hive.authprovider.hdfs.liststatus.batch.size* to HiveConf.java, so it needs to
be documented in the wiki (for whatever release it ends up in).
* [Configuration Properties -- Authentication/Authorization |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-Authentication/Authorization]
> 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
> Labels: TODOC1.2
> Fix For: 1.2.0
>
> Attachments: HIVE-9736.1.patch, HIVE-9736.2.patch, HIVE-9736.3.patch,
> HIVE-9736.4.patch, HIVE-9736.5.patch, HIVE-9736.6.patch, HIVE-9736.7.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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