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From "Robbie Strickland (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-9607) Get high load after upgrading from 2.1.3 to cassandra 2.1.6
Date Mon, 22 Jun 2015 20:39:01 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-9607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robbie Strickland updated CASSANDRA-9607:
-----------------------------------------
    Attachment: vm_monitor.png
                GC_state.png
                dump.tdump
                cpu_profile.png
                client_blocked_thread.png

I was able to bring the data down to my local machine and replicate the issue on a fresh install
while profiling.  I've attached screen shots of the session, as well as the thread state on
the client while it's happening.  You can see the server blocking on select and the client
blocking on accept, which of course causes both ends to become unresponsive.

> Get high load after upgrading from 2.1.3 to cassandra 2.1.6
> -----------------------------------------------------------
>
>                 Key: CASSANDRA-9607
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9607
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: OS: 
> CentOS 6 * 4
> Ubuntu 14.04 * 2
> JDK: Oracle JDK 7, Oracle JDK 8
> VM: Azure VM Standard A3 * 6
> RAM: 7 GB
> Cores: 4
>            Reporter: Study Hsueh
>            Assignee: Tyler Hobbs
>            Priority: Critical
>             Fix For: 2.1.x, 2.2.x
>
>         Attachments: GC_state.png, cassandra.yaml, client_blocked_thread.png, cpu_profile.png,
dump.tdump, load.png, log.zip, schema.zip, vm_monitor.png
>
>
> After upgrading cassandra version from 2.1.3 to 2.1.6, the average load of my cassandra
cluster grows from 0.x~1.x to 3.x~6.x. 
> What kind of additional information should I provide for this problem?



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