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https://issues.apache.org/jira/browse/CASSANDRA-6546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13862019#comment-13862019
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Jason Harvey commented on CASSANDRA-6546:
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Might be a regression of CASSANDRA-3867
> 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
> 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.
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