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https://issues.apache.org/jira/browse/HIVE-18699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16387959#comment-16387959
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Peter Vary commented on HIVE-18699:
-----------------------------------
+1
> 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
> Attachments: HIVE-18699.1.patch
>
>
> 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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