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https://issues.apache.org/jira/browse/HIVE-18892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marta Kuczora updated HIVE-18892:
---------------------------------
    Attachment: HIVE-18892.1.patch

> Fix NPEs in HiveMetastore.exchange_partitions method
> ----------------------------------------------------
>
>                 Key: HIVE-18892
>                 URL: https://issues.apache.org/jira/browse/HIVE-18892
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>            Reporter: Marta Kuczora
>            Assignee: Marta Kuczora
>            Priority: Minor
>         Attachments: HIVE-18892.1.patch
>
>
> The TestExchangePartitions tests revealed that NPE is thrown if the 
> exchange_partitions method is called with null, empty or non-existing DB and 
> table names. These NPEs could be prevented with a simple null check and a 
> MetaException with a proper error message should be thrown instead.
> Example: NPE is thrown in the following test cases
>  * testExchangePartitionsNonExistingSourceTable
>  * testExchangePartitionsNonExistingSourceDB
>  * testExchangePartitionsNonExistingDestTable
>  * testExchangePartitionsNonExistingDestDB
>  * testExchangePartitionsEmptySourceTable
>  * testExchangePartitionsEmptySourceDB
>  * testExchangePartitionsEmptyDestTable
>  * testExchangePartitionsEmptyDestDB
>  * testExchangePartitionsNullSourceTable
>  * testExchangePartitionsNullSourceDB
>  * testExchangePartitionsNullDestTable
>  * testExchangePartitionsNullDestDB
>  * testExchangePartitionsNullPartSpec



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