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https://issues.apache.org/jira/browse/CASSANDRA-5084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13755140#comment-13755140
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Jonathan Ellis commented on CASSANDRA-5084:
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Do you have to invoke a method or does just touching .instance work? (Either
way a comment would be nice.)
> Cassandra should expose connected client state via JMX
> ------------------------------------------------------
>
> Key: CASSANDRA-5084
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5084
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Robert Coli
> Assignee: Suresh
> Priority: Minor
> Labels: lhf
> Attachments: trunk-5084.patch
>
>
> There is currently no good way to determine or estimate how many clients are
> connected to a cassandra node without using netstat or (if using sync thrift
> server) counting threads. There is also no way to understand what state any
> given connection is in. People regularly come into #cassandra/cassandra-user@
> and ask how to get the equivalent of a MySQL "SHOW FULL PROCESSLIST."
> While I understand that feature parity with SHOW FULL
> PROCESSLIST/information_schema.processlist is unlikely, even a few basic
> metrics like "number of connected clients" or "number of active clients"
> would greatly help with this operational information need.
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