For what its worth, I highly recommend you remove that option in all
cassandra clusters first thing. A possibly non existent improvement (ie
/tmp on different low throughput drive) vs being able to diagnose issues is
a no brainer. You can measure or monitor gc logs for your safepoint pauses
to see
Thank you Yuki, this explains it.
I am used to working on C* 2.1 in production where this JVM flag is not
enabled.
On Wed, 19 Sep 2018 at 00:29, Yuki Morishita wrote:
> This is because Cassandra sets -XX:+PerfDisableSharedMem JVM option by
> default.
> This prevents tools such as jps to list jv
This is because Cassandra sets -XX:+PerfDisableSharedMem JVM option by default.
This prevents tools such as jps to list jvm processes.
See https://issues.apache.org/jira/browse/CASSANDRA-9242 for detail.
You can work around by doing what Riccardo said.
On Tue, Sep 18, 2018 at 9:41 PM Philip Ó Cond
Hi Riccardo,
Yes that works for me:
Welcome to JMX terminal. Type "help" for available commands.
$> open localhost:7199
#Connection to localhost:7199 is opened
$>domains
#following domains are available
JMImplementation
ch.qos.logback.classic
com.sun.management
java.lang
java.nio
java.util.loggin
Hi Philip,
I've used jmxterm myself without any problems particular problems. On my
systems too, I don't get the cassandra daemon listed when issuing the
`jvms` command but I never spent much time investigating it.
Assuming you have not changed anything relevant in the cassandra-env.sh you
can con
Further info:
I would expect to see the following when I list the jvm's:
Welcome to JMX terminal. Type "help" for available commands.
$>jvms
*25815(m) - org.apache.cassandra.service.CassandraDaemon*
17628( ) - jmxterm-1.0-alpha-4-uber.jar
But jmxtem is not picking up the JVM for Cassandr
Hi All,
I need a little advice. I'm trying to access the JMX terminal using
*jmxterm-1.0-alpha-4-uber.jar* with a very simple default install of C*
3.11.3
I keep getting the following:
[cassandra@reaper-1 conf]$ java -jar jmxterm-1.0-alpha-4-uber.jar
Welcome to JMX terminal. Type "help" for ava
