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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HIVE-20436) Lock Manager scalability - linear
Date Wed, 22 Aug 2018 00:52:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-20436?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eugene Koifman reassigned HIVE-20436:
-------------------------------------


> Lock Manager scalability - linear
> ---------------------------------
>
>                 Key: HIVE-20436
>                 URL: https://issues.apache.org/jira/browse/HIVE-20436
>             Project: Hive
>          Issue Type: Improvement
>          Components: Transactions
>    Affects Versions: 3.0.0
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>            Priority: Major
>
> Hive TransactionManager currently has a mix of lock based and optimistic concurrency
management techniques (which at times overlap).
> For inserts with Dynamic Partitions that represents update/merge it acquires locks on
each existing partition which can flood the metastore DB.
> Need to clean up the logical model and the implementation.
> This will be an umbrella Jira for this



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