cross DC data sync starts without rebuilding nodes on new DC

2016-04-04 Thread Vijay Patil
Hi, I have configured new DC as per instructions at below link. https://docs.datastax.com/en/cassandra/2.0/cassandra/operations/ops_add_dc_to_cluster_t.html After completing step 7.a (which is altering keyspace with desired replication factor for new DC) data automatically starts syncing from exi

Re: all the nost are not reacheable when running massive deletes

2016-04-04 Thread daemeon reiydelle
Network issues. Could be jumbo frames not consistent or other. sent from my mobile sent from my mobile Daemeon C.M. Reiydelle USA 415.501.0198 London +44.0.20.8144.9872 On Apr 4, 2016 5:34 AM, "Paco Trujillo" wrote: > Hi everyone > > > > We are having problems with our cluster (7 nodes version

Re: Speeding up "nodetool rebuild"

2016-04-04 Thread Alain RODRIGUEZ
+1, unless it is already logged and I ignore it. Cassandra being open source feel free to participate by creating an issue and/or sharing a patch to do whatever you think would improve Cassandra. C*heers, --- Alain Rodriguez - al...@thelastpickle.com France The Last Pickle -

Re: all the nost are not reacheable when running massive deletes

2016-04-04 Thread Alain RODRIGUEZ
Hola Paco, > the mutation stages pending column grows without stop, could be that the > problem > CPU (near 96%) > Yes, basically I think you are over using this cluster. but two of them have high cpu load, especially the 232 because I am running > a lot of deletes using cqlsh in that node.

Re: Hardware used

2016-04-04 Thread Alain RODRIGUEZ
It depends on your use case. I believe nice options in AWS would be (if not using AWS, you will have a rough idea of what machines to use) I2 family - Fast (SSD), relatively limited capacity (800 GB+), expensive D2 family - Relatively fast many HD (consider using raid-0), Very high storage capac

RE: Speeding up "nodetool rebuild"

2016-04-04 Thread Anubhav Kale
Thanks. Would it be better to log it clearly or expose as a metric or something else that can be easily automated ? From: Alain RODRIGUEZ [mailto:arodr...@gmail.com] Sent: Friday, April 1, 2016 1:55 AM To: user@cassandra.apache.org Subject: Re: Speeding up "nodetool rebuild" Hi, is there any wa

Cassandra table limitation

2016-04-04 Thread jason zhao yang
Hi, This is Jason. Currently, I am using C* 2.1.10, I want to ask what's the optimal number of tables I should create in one cluster? My use case is that I will prepare a keyspace for each of my tenant, and every tenant will create tables they needed. Assume each tenant created 50 tables with no

all the nost are not reacheable when running massive deletes

2016-04-04 Thread Paco Trujillo
Hi everyone We are having problems with our cluster (7 nodes version 2.0.17) when running "massive deletes" on one of the nodes (via cql command line). At the beginning everything is fine, but after a while we start getting constant NoHostAvailableException using the datastax driver: Caused by