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https://issues.apache.org/jira/browse/HDDS-9519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai updated HDDS-9519:
-----------------------------------
Status: Patch Available (was: In Progress)
> NPE in OM background services during restart
> --------------------------------------------
>
> Key: HDDS-9519
> URL: https://issues.apache.org/jira/browse/HDDS-9519
> Project: Apache Ozone
> Issue Type: Bug
> Components: OM
> Reporter: Attila Doroszlai
> Assignee: Attila Doroszlai
> Priority: Minor
> Labels: pull-request-available
>
> Various OM background services can encounter NPE after shutdown:
> {code}
> 2023-10-20 11:38:21,873 [omNode-3-KeyDeletingService#0] WARN
> utils.BackgroundService (BackgroundService.java:lambda$run$0(145)) -
> Background task execution failed
> java.lang.NullPointerException
> at
> org.apache.hadoop.ozone.om.OzoneManager.isLeaderReady(OzoneManager.java:4068)
> at
> org.apache.hadoop.ozone.om.service.DirectoryDeletingService.shouldRun(DirectoryDeletingService.java:110)
> at
> org.apache.hadoop.ozone.om.service.DirectoryDeletingService.access$0(DirectoryDeletingService.java:105)
> at
> org.apache.hadoop.ozone.om.service.DirectoryDeletingService$DirDeletingTask.call(DirectoryDeletingService.java:145)
> at
> org.apache.hadoop.hdds.utils.BackgroundService$PeriodicalTask.lambda$run$0(BackgroundService.java:140)
> {code}
> This happens mostly in integration tests that restart OM.
> *
> https://github.com/adoroszlai/ozone-build-results/blob/master/2023/09/14/25374/it-om/hadoop-ozone/integration-test/org.apache.hadoop.ozone.om.TestSnapshotBackgroundServices-output.txt
> *
> https://github.com/adoroszlai/ozone-build-results/blob/master/2023/10/09/25832/it-om/hadoop-ozone/integration-test/org.apache.hadoop.ozone.om.TestOzoneManagerHAMetadataOnly-output.txt
> *
> https://github.com/adoroszlai/ozone-build-results/blob/master/2023/10/17/26083/it-om/hadoop-ozone/integration-test/org.apache.hadoop.ozone.om.TestOzoneManagerHAMetadataOnly-output.txt
> *
> https://github.com/adoroszlai/ozone-build-results/blob/master/2023/10/20/26171/it-om/hadoop-ozone/integration-test/org.apache.hadoop.ozone.om.TestOzoneManagerHAMetadataOnly-output.txt
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