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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6546) disablethrift results in unclosed file descriptors
Date Tue, 22 Apr 2014 21:48:17 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13977497#comment-13977497
] 

Jonathan Ellis commented on CASSANDRA-6546:
-------------------------------------------

Do you want to take a stab at this, [~mishail]?

> disablethrift results in unclosed file descriptors
> --------------------------------------------------
>
>                 Key: CASSANDRA-6546
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6546
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jason Harvey
>            Assignee: Ryan McGuire
>            Priority: Minor
>
> Disabling thrift results in unclosed thrift sockets being left around.
> Steps to reproduce and observe:
> 1. Have a handful of clients connect via thrift.
> 2. Disable thrift.
> 3. Enable thrift, have the clients reconnect.
> 4. Observe netstat or lsof, and you'll find a lot of thrift sockets in CLOSE_WAIT state,
and they'll never go away.
>   * Also verifiable from org.apache.cassandra.metrics:type=Client,name=connectedThriftClients
MBean.
> What's extra fun about this is the leaked sockets still count towards your maximum RPC
thread count. As a result, toggling thrift enough times will result in an rpc_max_threads
number of CLOSED_WAIT sockets, with no new clients able to connect.
> This was reproduced with HSHA. I haven't tried it in sync yet.



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