Ahmed Hussein created HADOOP-17417: -------------------------------------- Summary: 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
{{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: common-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-dev-h...@hadoop.apache.org