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From Mehdi Bada <mehdi.b...@dbi-services.com>
Subject Cassandra Cluster issues
Date Mon, 08 May 2017 13:15:19 GMT
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 oriented. All machines are consuming between 5 - 10 % of the CPU and
45 % of RAM. 

The cluster is very slow since the last repair, not all writes have been done... I don't know
how to start the debbuging of my cluster. 

Do you have any ideas ? 


Many thanks in advance 

Regards 
Mehdi Bada 

---- 

Mehdi Bada | Consultant 
Phone: +41 32 422 96 00 | Mobile: +41 79 928 75 48 | Fax: +41 32 422 96 15 
dbi services, Rue de la Jeunesse 2, CH-2800 Delémont 
mehdi.bada@dbi-services.com 
www.dbi-services.com 



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