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From "Marton Bod (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-23067) Use batch DB calls in TxnHandler for commitTxn and abortTxns
Date Wed, 01 Apr 2020 09:44:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marton Bod updated HIVE-23067:
------------------------------
    Attachment: HIVE-23067.2.patch

> Use batch DB calls in TxnHandler for commitTxn and abortTxns
> ------------------------------------------------------------
>
>                 Key: HIVE-23067
>                 URL: https://issues.apache.org/jira/browse/HIVE-23067
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Marton Bod
>            Assignee: Marton Bod
>            Priority: Major
>         Attachments: HIVE-23067.1.patch, HIVE-23067.1.patch, HIVE-23067.1.patch, HIVE-23067.1.patch,
HIVE-23067.2.patch, HIVE-23067.2.patch
>
>
> To reduce the number of database calls and network roundtrips, we could use more batching
in TxnHandler, where currently in many places we call insert commands in loops sequentially.
> Some examples:
>  * openTxns (TXNS, REPL_TXN_MAP)
>  * commitTxn (COMPLETED_TXN_COMPONENTS)
>  * replTableWriteIdState (TXN_TO_WRITE_ID)
>  * allocateTableWriteIds (TXN_TO_WRITE_ID)
>  * ....
>  



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