Mailing-List: contact commits-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@cassandra.apache.org
Date: Thu, 30 Aug 2012 03:54:08 +1100 (NCT)
From: "Jonathan Ellis (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <1340961334.12540.1346259248221.JavaMail.jiratomcat@arcas>
In-Reply-To: <551434938.6420.1345742502705.JavaMail.jiratomcat@arcas>
Subject: [jira] [Commented] (CASSANDRA-4571) Strange permament socket
 descriptors increasing leads to "Too many open files"
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/CASSANDRA-4571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13444197#comment-13444197 ] 

Jonathan Ellis commented on CASSANDRA-4571:
-------------------------------------------

Are you sure you can't reproduce on a single-node cluster?

Because we're getting conflicting evidence here; on the one hand, strace indicates that the fd leakage is related to file i/o, but if so, you shouldn't need multiple nodes in the cluster to repro.
                
> Strange permament socket descriptors increasing leads to "Too many open files"
> ------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-4571
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4571
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.1.1, 1.1.2, 1.1.3
>         Environment: CentOS 5.8 Linux 2.6.18-308.13.1.el5 #1 SMP Tue Aug 21 17:10:18 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux. 
> java version "1.6.0_33"
> Java(TM) SE Runtime Environment (build 1.6.0_33-b03)
> Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03, mixed mode)
>            Reporter: Serg Shnerson
>            Priority: Critical
>
> On the two-node cluster there was found strange socket descriptors increasing. lsof -n | grep java shows many rows like"
> java       8380 cassandra  113r     unix 0xffff8101a374a080            938348482 socket
> java       8380 cassandra  114r     unix 0xffff8101a374a080            938348482 socket
> java       8380 cassandra  115r     unix 0xffff8101a374a080            938348482 socket
> java       8380 cassandra  116r     unix 0xffff8101a374a080            938348482 socket
> java       8380 cassandra  117r     unix 0xffff8101a374a080            938348482 socket
> java       8380 cassandra  118r     unix 0xffff8101a374a080            938348482 socket
> java       8380 cassandra  119r     unix 0xffff8101a374a080            938348482 socket
> java       8380 cassandra  120r     unix 0xffff8101a374a080            938348482 socket
> " And number of this rows constantly increasing. After about 24 hours this situation leads to error.
> We use PHPCassa client. Load is not so high (aroud ~50kb/s on write). 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira