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https://issues.apache.org/jira/browse/HIVE-8850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14223582#comment-14223582
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Brock Noland commented on HIVE-8850:
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[~ctang.ma] I know you've looked at this recently. Let me know what you think.
> 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, HIVE-8850.3.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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