Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm
Precedence: bulk
Date: Mon, 6 Jul 2015 21:03:05 +0000 (UTC)
From: "Sean Busbey (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12842477.1435884096000.110846.1436216585051@Atlassian.JIRA>
In-Reply-To: <JIRA.12842477.1435884096000@Atlassian.JIRA>
References: <JIRA.12842477.1435884096000@Atlassian.JIRA>
 <JIRA.12842477.1435884096001@arcas>
Subject: [jira] [Commented] (HBASE-14017) Procedure v2 -
 MasterProcedureQueue fix concurrency issue on table queue deletion
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/HBASE-14017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14615658#comment-14615658 ] 

Sean Busbey commented on HBASE-14017:
-------------------------------------

I've been pushing the changes [~mbertozzi] had ready to go in a local repo before the ASF git outage started. I just got to branch-1.1. I'll check to see if it's different?

> Procedure v2 - MasterProcedureQueue fix concurrency issue on table queue deletion
> ---------------------------------------------------------------------------------
>
>                 Key: HBASE-14017
>                 URL: https://issues.apache.org/jira/browse/HBASE-14017
>             Project: HBase
>          Issue Type: Sub-task
>          Components: proc-v2
>    Affects Versions: 2.0.0, 1.2.0, 1.1.1, 1.3.0
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>            Priority: Blocker
>             Fix For: 2.0.0, 1.2.0, 1.1.2
>
>         Attachments: HBASE-14017-v0.patch, HBASE-14017-v0.patch, HBASE-14017.as-pushed-master.patch, HBASE-14017.v1-branch1.1.patch, HBASE-14017.v1-branch1.1.patch
>
>
> [~syuanjiang] found a concurrecy issue in the procedure queue delete where we don't have an exclusive lock before deleting the table
> {noformat}
> Thread 1: Create table is running - the queue is empty and wlock is false 
> Thread 2: markTableAsDeleted see the queue empty and wlock= false
> Thread 1: tryWrite() set wlock=true; too late
> Thread 2: delete the queue
> Thread 1: never able to release the lock - NPE when trying to get the queue
> {noformat}


--
This message was sent by Atlassian JIRA
(v6.3.4#6332)