[
https://issues.apache.org/jira/browse/YARN-9673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
chan updated YARN-9673:
-----------------------
Environment: (was: protected void handleStoreEvent(RMStateStoreEvent
event) {
this.writeLock.lock();
try {
if (LOG.isDebugEnabled()) {
LOG.debug("Processing event of type " + event.getType());
}
final RMStateStoreState oldState = getRMStateStoreState();
this.stateMachine.doTransition(event.getType(), event);
if (oldState != getRMStateStoreState()) {
LOG.info("RMStateStore state change from " + oldState + " to "
+ getRMStateStoreState());
}
} catch (InvalidStateTransitonException e) {
LOG.error("Can't handle this event at current state", e);
} finally {
this.writeLock.unlock();
}
})
> RMStateStore writeLock make app waste more time
> -----------------------------------------------
>
> Key: YARN-9673
> URL: https://issues.apache.org/jira/browse/YARN-9673
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Affects Versions: 2.7.3
> Reporter: chan
> Priority: Blocker
>
> We have 1000 nodes in the cluster. Recently I found that when many tasks are
> submitted to the resourcemanager, an application takes 5-8 minutes from NEW
> to NEW_SAVING state, and an appattempt takes almost the same time from
> ALLOCATED_SAVING to ALLOCATED. I think the problem occurs in
> RMStateStore#handleStoreEvent, both methods will call this method, and this
> method is locked. I want to ask why there use writeLock to lock it.
> Anyone has encountered the same problem?
>
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