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https://issues.apache.org/jira/browse/YARN-9311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16771666#comment-16771666
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Prabhu Joseph commented on YARN-9311:
-------------------------------------
[~rohithsharma] {{TestRMRestart#testRMStateStoreDispatcherDrainedOnRMStop}}
started hanging after YARN-8449. Until this fix, RM startService won't call
{{RMStateStore#handleStoreEvent}} and so won't block at while(wait); YARN-8449
does state store of proxyCA at serviceStart. The fix looks valid one, just
fixing testcase should be enough. Can you review the same.
YARN-8449 state store at serviceStart:
{code}
protected void serviceStart() throws Exception {
- proxyCA.init();
+ if (!wasRecovered) {
+ proxyCA.init();
+ }
+ wasRecovered = false;
+ rmContext.getStateStore().storeProxyCACert(
+ proxyCA.getCaCert(), proxyCA.getCaKeyPair().getPrivate());
{code}
Test case has while(wait); at {{handleStoreEvent}}
{code}
@Override
protected void handleStoreEvent(RMStateStoreEvent event) {
// Block app saving request.
// Skip if synchronous updation of DTToken
if (!(event instanceof RMStateStoreAMRMTokenEvent)
&& !(event instanceof RMStateStoreRMDTEvent)
&& !(event instanceof RMStateStoreRMDTMasterKeyEvent)) {
while (wait);
}
super.handleStoreEvent(event);
}
{code}
> TestRMRestart hangs due to a deadlock
> -------------------------------------
>
> Key: YARN-9311
> URL: https://issues.apache.org/jira/browse/YARN-9311
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Prabhu Joseph
> Assignee: Prabhu Joseph
> Priority: Major
> Attachments: YARN-9311-001.patch, jstackdata, jstackdata1
>
>
> {{TestRMRestart#testRMStateStoreDispatcherDrainedOnRMStop}} hangs as
> {{MockRM}} start runs in an infinite loop at {{handleStoreEvent}}
> {code}
> [INFO] Running org.apache.hadoop.yarn.server.resourcemanager.TestRMRestart
> [INFO] Running
> org.apache.hadoop.yarn.server.resourcemanager.TestMoveApplication
> [INFO] Tests run: 4, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 4.468
> s - in org.apache.hadoop.yarn.server.resourcemanager.TestMoveApplication
> {code}
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