[
https://issues.apache.org/jira/browse/HADOOP-17417?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jim Brennan resolved HADOOP-17417.
----------------------------------
Resolution: Later
This needs to be done as part of a larger feature that we are not ready to put
up yet.
> Reduce UGI overhead in token ops
> ---------------------------------
>
> Key: HADOOP-17417
> URL: https://issues.apache.org/jira/browse/HADOOP-17417
> Project: Hadoop Common
> Issue Type: Improvement
> Components: common, kms, performance, rpc-server, security
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Major
>
> {{DelegationTokenIdentifier}} has a {{ugiCache}} but
> AbstractDelegationTokenManager calls a static method {{getRemoteUser()}}
> which would bypass the cache.
> Performance analysis of the KMS revealed the RPC server layer is creating
> many and redundant UGI instances.. UGIs are not cheap to instantiate, require
> synchronization, and waste memory. Reducing instantiations will improve the
> performance of the ipc readers.
>
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
