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https://issues.apache.org/jira/browse/HIVE-18619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16361859#comment-16361859
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Steve Yeom commented on HIVE-18619:
-----------------------------------
Using the flag by Eugene we can roll back a transaction in the local TxnManager
instance inside the Driver (as Hadoop and Metastore client)
in a JUnit based unit test.
The same basic scenario I mentioned 5 days ago works fine.
Each reader from SELECT gets ValidTxnList that includes aborted transaction id
so as to figure out aborted delta directories.
I will add a simple test as a patch for this jira.
Gopal mentioned we need to delete the global transaction entries for the
temporary table commands which are left over after Hive-18192 is checked in.
The current IMetaStoreClient implementation for temporary table does not have
rollback() method to update the MetaStore DB.
> Verification of temporary Micromanaged table atomicity is needed
> -----------------------------------------------------------------
>
> Key: HIVE-18619
> URL: https://issues.apache.org/jira/browse/HIVE-18619
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 3.0.0
> Reporter: Steve Yeom
> Assignee: Steve Yeom
> Priority: Major
>
> Session based temporary table by HIVE-7090 had no consideration of
> Micromanaged table
> (MM) since there was no insert-only ACID table at its creation tije.
> HIVE-18599 addressed the issue of no writes during CTTAS (Create Temporary
> Table As Select)
> on Micro-Managed table. But atomicity of temporary MM table is not verified.
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