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Manikandan R commented on YARN-6523: ------------------------------------ Attached patch based on our earlier discussions. Thanks [~Naganarasimha] for taking a quick glance on the patch. I will try to cover the RM restarts, NM restarts case also in live pseudo cluster setup. > Newly retrieved security Tokens are sent as part of each heartbeat to each > node from RM which is not desirable in large cluster > ------------------------------------------------------------------------------------------------------------------------------- > > Key: YARN-6523 > URL: https://issues.apache.org/jira/browse/YARN-6523 > Project: Hadoop YARN > Issue Type: Improvement > Components: RM > Affects Versions: 2.8.0, 2.7.3 > Reporter: Naganarasimha G R > Assignee: Manikandan R > Attachments: YARN-6523.001.patch > > > Currently as part of heartbeat response RM sets all application's tokens > though all applications might not be active on the node. On top of it > NodeHeartbeatResponsePBImpl converts tokens for each app into > SystemCredentialsForAppsProto. Hence for each node and each heartbeat too > many SystemCredentialsForAppsProto objects were getting created. > We hit a OOM while testing for 2000 concurrent apps on 500 nodes cluster with > 8GB RAM configured for RM -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org