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From "Chris Lohfink (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7254) NPE on startup if another Cassandra instance is already running
Date Mon, 01 Sep 2014 13:46:21 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14117435#comment-14117435
] 

Chris Lohfink commented on CASSANDRA-7254:
------------------------------------------

[~na-ga] if you use
{code}
sudo netstat -anp | grep \* | grep LISTEN
{code}
you should be able to find whatever is using the port that either jmx or jolokia agent is
using.  Should probably switch to oracle JVM as well.

> NPE on startup if another Cassandra instance is already running
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-7254
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7254
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Tyler Hobbs
>            Assignee: Brandon Williams
>            Priority: Minor
>             Fix For: 2.0.10, 2.1 rc3
>
>         Attachments: 7254.txt
>
>
> After CASSANDRA-7087, if you try to start cassandra while another instance is already
running, you'll see something like this:
> {noformat}
> $ bin/cassandra -f
> Error: Exception thrown by the agent : java.lang.NullPointerException
> {noformat}
> This is probably a JVM bug, but we should confirm that, open a JVM ticket, and see if
we can give a more useful error message on the C* side.



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