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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1730) Leveldb timeline store needs simple write locking
Date Tue, 04 Mar 2014 17:31:22 GMT

    [ https://issues.apache.org/jira/browse/YARN-1730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13919661#comment-13919661

Vinod Kumar Vavilapalli commented on YARN-1730:

I wish there were more tests, but testing these write locks isn't easy. So I am fine for now.

The latest patch looks good to me. +1. Checking this in.

> Leveldb timeline store needs simple write locking
> -------------------------------------------------
>                 Key: YARN-1730
>                 URL: https://issues.apache.org/jira/browse/YARN-1730
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Billie Rinaldi
>            Assignee: Billie Rinaldi
>         Attachments: YARN-1730.1.patch, YARN-1730.2.patch, YARN-1730.3.patch, YARN-1730.4.patch,
YARN-1730.5.patch, YARN-1730.6.patch
> Although the leveldb writes are performed atomically in a batch, a start time for the
entity needs to identified before each write.  Thus a per-entity write lock should be acquired.

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