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From "Wei Zheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16063) instead of explicitly specifying mmWriteId during compilation phase, it should only be generated whenever needed during runtime
Date Wed, 01 Mar 2017 00:30:45 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15889200#comment-15889200
] 

Wei Zheng commented on HIVE-16063:
----------------------------------

We will open transaction for all mm table write operations. Once we open a transaction in
Driver, the txnId should be available across the session.

> instead of explicitly specifying mmWriteId during compilation phase, it should only be
generated whenever needed during runtime
> -------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-16063
>                 URL: https://issues.apache.org/jira/browse/HIVE-16063
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Wei Zheng
>            Assignee: Wei Zheng
>
> For ACID transaction logic to work with mm table, first thing is to make the ID usage
logic consistent. ACID stores valid txn list in VALID_TXNS_KEY.



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