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https://issues.apache.org/jira/browse/HDDS-17405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chi-Hsuan Huang reassigned HDDS-17405:
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Assignee: Chi-Hsuan Huang
> Intermittent failure in
> TestOzoneManagerHAFollowerReadWithStoppedNodes#testFollowerReadOmProxyProviderFailoverOnConnectionFailure
> ---------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDDS-17405
> URL: https://issues.apache.org/jira/browse/HDDS-17405
> Project: Apache Ozone
> Issue Type: Sub-task
> Components: OM HA, test
> Reporter: Chi-Hsuan Huang
> Assignee: Chi-Hsuan Huang
> Priority: Major
>
> {code}
> org.apache.hadoop.ozone.om.TestOzoneManagerHAFollowerReadWithStoppedNodes.testFollowerReadOmProxyProviderFailoverOnConnectionFailure
> -- Time elapsed: 15.49 s <<< ERROR!
> org.apache.hadoop.ipc_.RemoteException(org.apache.ratis.protocol.exceptions.ReadIndexException):
> omNode-1@group-523986131536: Leader is unknown.
> at
> org.apache.ratis.server.impl.RaftServerImpl.sendReadIndexAsync(RaftServerImpl.java:1110)
> ...
> at
> org.apache.hadoop.ozone.om.TestOzoneManagerHAFollowerReadWithStoppedNodes.testFollowerReadOmProxyProviderFailoverOnConnectionFailure(TestOzoneManagerHAFollowerReadWithStoppedNodes.java:252)
> {code}
> h3. Root cause
> Same as HDDS-16843, in the follower read proxy test. The test stops the
> current proxy OM, which was the leader in both failing runs, and immediately
> sends a {{listVolumes}}. The first election after that ended in a split vote,
> so the client used up its 5 failovers, getting "Leader is unknown" from both
> remaining OMs, before a new leader was elected 0.2-0.3 s later.
> h3. Fix
> Call {{waitForLeaderToBeReady()}} after stopping the OM, as done in
> HDDS-16843 for {{testLeaderOmProxyProviderFailoverOnConnectionFailure}}. The
> client still points at the stopped OM, so the next request still exercises
> the failover.
> - https://github.com/apache/ozone/actions/runs/37302015763/job/111741681965
> - https://github.com/apache/ozone/actions/runs/38766809137/job/116603516139
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