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https://issues.apache.org/jira/browse/HDDS-5099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17327141#comment-17327141
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Lokesh Jain commented on HDDS-5099:
-----------------------------------
Sure [~arp], will review once PR is out.
> Error with unit test for hdds.container-service
> TestSchemaOneBackwardsCompatibility
> -----------------------------------------------------------------------------------
>
> Key: HDDS-5099
> URL: https://issues.apache.org/jira/browse/HDDS-5099
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Neil Joshi
> Assignee: Neil Joshi
> Priority: Minor
> Attachments: intermittent_err.png, intermittent_fix1.png
>
>
> The unit test _testDelete_ from _TestSchemaOneBackwardsCompatibility_
> (_hadoop-hdds/container-service_) has an observed reproducible intermittent
> error. This error is due to the test launching a background task
> (_BackgroundService.java_) that it expects to block to completion, however it
> does not. The test, through a thread pool executor launches a task to delete
> blocks and expects to block until completion. After blocked until
> completion it checks the worker result. Since the current implementation
> does not block, at times the worker is not done before the test checks the
> condition, hence the intermittent error.
>
> Observed error:
> {code:java}
> mvn -Dtest=TestSchemaOneBackwardsCompatibility test{code}
> (see attachment err)
>
> With waiting until worker task is finished before checking condition: (see
> attachment showing test passed)
>
>
>
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