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https://issues.apache.org/jira/browse/HIVE-21480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-21480 started by Morio Ramdenbourg.
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> Fix test TestRemoteHiveMetaStore.testJDOPersistanceManagerCleanup
> -----------------------------------------------------------------
>
>                 Key: HIVE-21480
>                 URL: https://issues.apache.org/jira/browse/HIVE-21480
>             Project: Hive
>          Issue Type: Improvement
>          Components: Standalone Metastore
>    Affects Versions: 4.0.0
>            Reporter: Morio Ramdenbourg
>            Assignee: Morio Ramdenbourg
>            Priority: Major
>
> [TestRemoteHiveMetaStore#testJDOPersistanceManagerCleanup|https://github.com/apache/hive/blob/master/standalone-metastore/metastore-server/src/test/java/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java#L3140-L3162]
>  tests whether the JDO persistence manager cache cleanup was performed 
> correctly when a HiveMetaStoreClient executes an API call, and closes. It 
> does this by ensuring that the cache object count before the API call, and 
> after closing, are the same. However, there are some assumptions that are not 
> always correct, and can cause flakiness.
> For example, lingering resources could be present from previous tests or from 
> setup depending on how PTest runs it, and can cause the object count to 
> sometimes be incorrect. We should rewrite this test to account for this 
> flakiness that can occur.



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