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https://issues.apache.org/jira/browse/HIVE-8850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14220072#comment-14220072
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Sushanth Sowmyan commented on HIVE-8850:
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Note also, that the result of this is that the directsql attempt of getDatabase
will not have a rollback executed on it if it fails before falling back to jdo,
but that is fine, I think, since it's a read-only operation, and thus, does not
need rollback.
> ObjectStore:: rollbackTransaction() and getHelper class needs to be looked
> into further.
> ----------------------------------------------------------------------------------------
>
> Key: HIVE-8850
> URL: https://issues.apache.org/jira/browse/HIVE-8850
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Reporter: Hari Sankar Sivarama Subramaniyan
> Assignee: Hari Sankar Sivarama Subramaniyan
> Attachments: HIVE-8850.1.patch, HIVE-8850.2.patch
>
>
> We can run into issues as described below:
> Hive script adds 2800 partitions to a table and during this it can get a
> SQLState 08S01 [Communication Link Error] and bonecp kill all the connections
> in the pool. The partitions are added and a create table statement executes
> (Metering_IngestedData_Compressed). The map job finishes successfully and
> while moving the table to the hive warehouse the ObjectStore.java
> commitTransaction() raises the error: commitTransaction was called but
> openTransactionCalls = 0. This probably indicates that there are unbalanced
> calls to openTransaction/commitTransaction
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