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https://issues.apache.org/jira/browse/HIVE-18699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marta Kuczora reassigned HIVE-18699:
------------------------------------


> Check for duplicate partitions in HiveMetastore.exchange_partitions
> -------------------------------------------------------------------
>
>                 Key: HIVE-18699
>                 URL: https://issues.apache.org/jira/browse/HIVE-18699
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>            Reporter: Marta Kuczora
>            Assignee: Marta Kuczora
>            Priority: Minor
>
> The HiveMetastore.exchange_partitions method throws the following exception 
> if the dest table already contains a partition with the same values as the 
> partition to be exchanged.
> {noformat}
> org.apache.hadoop.hive.metastore.api.MetaException: Insert of object 
> "org.apache.hadoop.hive.metastore.model.MPartition@4e78fff5" using statement 
> "INSERT INTO PARTITIONS 
> (PART_ID,CREATE_TIME,LAST_ACCESS_TIME,PART_NAME,SD_ID,TBL_ID) VALUES 
> (?,?,?,?,?,?)" failed : The statement was aborted because it would have 
> caused a duplicate key value in a unique or primary key constraint or unique 
> index identified by 'UNIQUEPARTITION' defined on 'PARTITIONS'.
> {noformat}
> This use case could be handled better by checking if the partition already 
> exists in dest table and if it is, throw a MetaException with a proper error 
> message.



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