hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Marton Bod (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-23052) Optimize lock enqueueing in TxnHandler
Date Sat, 28 Mar 2020 17:51:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marton Bod updated HIVE-23052:
------------------------------
    Attachment: HIVE-23052.8.patch

> Optimize lock enqueueing in TxnHandler
> --------------------------------------
>
>                 Key: HIVE-23052
>                 URL: https://issues.apache.org/jira/browse/HIVE-23052
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Marton Bod
>            Assignee: Marton Bod
>            Priority: Major
>         Attachments: HIVE-23052.1.patch, HIVE-23052.2.patch, HIVE-23052.3.patch, HIVE-23052.4.patch,
HIVE-23052.5.patch, HIVE-23052.6.patch, HIVE-23052.7.patch, HIVE-23052.8.patch
>
>
> * Reduce scope of next_lock_id select-for-update by moving the txn_component inserts
before the S4U + inserting the hive_locks entries before the S4U (first with a temp ID, which
will be replaced later in a single update). This helps decrease the overall time that the
next_lock_id table is locked, thereby increasing concurrency
>  * Insert txn_components in a batch instead of one-by-one (also in TxnHandler::addDynamicPartition)
>  * Increment next_lock_id and update hive_locks table in a single batch statement
>  



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

Mime
View raw message