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https://issues.apache.org/jira/browse/CASSANDRA-4571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440518#comment-13440518
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Tobias Grahn commented on CASSANDRA-4571:
-----------------------------------------
I have seen the problem on cassandra 1.1.3 as well. Our 3 node cluster has the
same issue. It's a blocker.
We are using Hector as client and FD increases up to 100K and keeps growing...
Java (build 1.6.0_32-b05)
Linux 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 x86_64
x86_64 GNU/Linux
After a fresh start cassandra uses one unix FD then we put some load on and it
keeps growing.
lsof -p 14597 | grep -i unix
java 14597 root 43u unix 0xffff88082a3acc80 0t0 42443166 socket
Put load on cassandra and then it increases
lsof -p 14597 | grep -i unix | wc -l
5678
7654
.....
98403
> 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: 1.1.2
> 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).
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