Junping Du created YARN-3449:
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Summary: Recover appTokenKeepAliveMap upon nodemanager restart
Key: YARN-3449
URL: https://issues.apache.org/jira/browse/YARN-3449
Project: Hadoop YARN
Issue Type: Sub-task
Components: nodemanager
Affects Versions: 2.6.0, 2.7.0
Reporter: Junping Du
Assignee: Junping Du
appTokenKeepAliveMap in NodeStatusUpdaterImpl is used to keep application alive
after application is finished but NM still need app token to do log aggregation
(when enable security and log aggregation).
The applications are only inserted into this map when receiving
getApplicationsToCleanup() from RM heartbeat response. And RM only send this
info one time in RMNodeImpl.updateNodeHeartbeatResponseForCleanup(). NM restart
work preserving should put appTokenKeepAliveMap into NMStateStore and get
recovered after restart. Without doing this, RM could terminate application
earlier, so log aggregation could be failed if security is enabled.
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