Re: Cassandra Cluster issues

2017-05-08 Thread benjamin roth
Hm that question is like "My car does not start - whats the problem?". You have to monitor, monitor, monitor, monitor. I'd strongly advice to graph as many metrics as you can. Read them from the JMX interface and write them to a TSDB, visualize them e.g. with Grafana. Then read logs, trace your que

Cassandra Cluster issues

2017-05-08 Thread Mehdi Bada
Dear Cassandra Users, I have some issues since few days with the following cluster: - 5 nodes - Cassandra 3.7 - 2 seed nodes - 1 keyspace with RF=2, 300Go / nodes, WRITE_LEVEL=ONE, READ_LEVEL=ONE - 1 enormous table (90% of the keyspace) - TTL for each line insered The cluster is write or

Re: cluster issues

2013-02-01 Thread aaron morton
ing DseDelegateSnitch > > Thanks, > SC > From: aa...@thelastpickle.com > Subject: Re: cluster issues > Date: Tue, 29 Jan 2013 20:15:45 +1300 > To: user@cassandra.apache.org > > • We can always be proactive in keeping the time sync. But, Is there > any way to recover from a

RE: cluster issues

2013-01-30 Thread S C
I am using DseDelegateSnitch Thanks,SC From: aa...@thelastpickle.com Subject: Re: cluster issues Date: Tue, 29 Jan 2013 20:15:45 +1300 To: user@cassandra.apache.org We can always be proactive in keeping the time sync. But, Is there any way to recover from a time drift (in a reactive manner

Re: cluster issues

2013-01-28 Thread aaron morton
> We can always be proactive in keeping the time sync. But, Is there any way to > recover from a time drift (in a reactive manner)? Since it was a lab > environment, I dropped the KS (deleted data directory) There is a way to remove future dated columns, but it not for the faint hearted. Basic

cluster issues

2013-01-28 Thread S C
One of our node in a 3 node cluster drifted by ~ 20-25 seconds. While I figured this pretty quickly, I had few questions that am looking for some answers. We can always be proactive in keeping the time sync. But, Is there any way to recover from a time drift (in a reactive manner)? Since it wa