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List:       cassandra-commits
Subject:    [jira] [Commented] (CASSANDRA-8549) Not able to bring cassandra cluster to stable state
From:       "Rahul Bhardwaj (JIRA)" <jira () apache ! org>
Date:       2014-12-31 15:28:13
Message-ID: JIRA.12764365.1420013015000.121914.1420039693285 () Atlassian ! JIRA
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Rahul Bhardwaj commented on CASSANDRA-8549:
-------------------------------------------

Thanks for your quick response.. we have not tried yet, will back to you with our \
findings.

> Not able to bring cassandra cluster to stable state
> ---------------------------------------------------
> 
> Key: CASSANDRA-8549
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8549
> Project: Cassandra
> Issue Type: Bug
> Environment: centos 6
> Reporter: Rahul Bhardwaj
> Attachments: cassandra_conf.txt, system.log
> 
> 
> Hi,
> We are using cassandra 2.1 on prod environment (cluster with three 64 GB RAM \
> machines) where a batch of write operations are done per minute (around 10000 \
> inserts) using PHP PDO. Couple of days back we found our cluster unstable then we \
> restarted cassandra service on all machines, but since then cassandra is busy in \
> flushing bulk of sstable_activity which causes cassandra shutdown or unresponsive \
> due to full heap space (java heap space 8GB). After several attempts of restarting \
> cassandra service two nodes started. Out of these two nodes, one node's cassandra \
> daemon consumed whole RAM (64 GB). Top command shows 75G of virtual memory consumed \
> and 69 G of Resident memory consumption. Other node is ok. But node1 again busy in \
> flushing sstable_activity and not getting statrted. please help in solving this, \
> these issues are on prod environment. 



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