hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Denys Kuzmenko (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-23293) Locks: Implement zero-wait readers
Date Wed, 29 Apr 2020 09:03:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Denys Kuzmenko updated HIVE-23293:
----------------------------------
    Attachment:     (was: HIVE-23293.3.patch)

> Locks: Implement zero-wait readers 
> -----------------------------------
>
>                 Key: HIVE-23293
>                 URL: https://issues.apache.org/jira/browse/HIVE-23293
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Denys Kuzmenko
>            Assignee: Denys Kuzmenko
>            Priority: Major
>         Attachments: HIVE-23293.1.patch, HIVE-23293.2.patch, HIVE-23293.3.patch
>
>
> With a new lock type (EXCL_WRITE) for INSERT_OVERWRITE, SHARED_READ does not have to
wait for any lock - it can fails fast for a pending EXCLUSIVE, because even if there is an
EXCL_WRITE or SHARED_WRITE pending, there's no semantic reason to wait for them.



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

Mime
View raw message