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From "Igor Kryvenko (JIRA)" <>
Subject [jira] [Commented] (HIVE-17683) Add explain locks <sql> command
Date Mon, 30 Jul 2018 17:51:00 GMT


Igor Kryvenko commented on HIVE-17683:

[~ekoifman] Hi, Eugene. Yeah, it was related, I just missed one {{if}} branch in {{AcidUtils}}.
I've attached the patch with the fix.

> Add explain locks <sql> command
> -------------------------------
>                 Key: HIVE-17683
>                 URL:
>             Project: Hive
>          Issue Type: New Feature
>          Components: Transactions
>            Reporter: Eugene Koifman
>            Assignee: Igor Kryvenko
>            Priority: Critical
>         Attachments: HIVE-17683-branch-3.patch, HIVE-17683.01.patch, HIVE-17683.02.patch,
HIVE-17683.03.patch, HIVE-17683.04.patch, HIVE-17683.05.patch, HIVE-17683.06.patch
> Explore if it's possible to add info about what locks will be asked for to the query
> Lock acquisition (for Acid Lock Manager) is done in DbTxnManager.acquireLocks() which
is called once the query starts running.  Would need to refactor that.

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