Re: Robust of cassandra

2013-11-04 Thread Jiang Jacky
I am sorry Neha, so late to reply you. I will try that and let you know anyway. Thanks Neha, 2013/10/31 Neha Narkhede > The default replication factor is 1, so even if you have one broker > failure, you can run into a situation with no leader for some partitions. > You probably want to use a h

Re: Robust of cassandra

2013-10-31 Thread Neha Narkhede
The default replication factor is 1, so even if you have one broker failure, you can run into a situation with no leader for some partitions. You probably want to use a higher replication factor. Thanks, Neha On Thu, Oct 31, 2013 at 12:07 PM, Jiang Jacky wrote: > Hi, Neha > Thanks for replying

Re: Robust of cassandra

2013-10-31 Thread Jiang Jacky
Hi, Neha Thanks for replying, I am currently using the 0.8 version. I did not set any replication factor, it keeps the default from package. When I check the leader for that topic, it is none. It is weird, There is no problem for any other topics except that topic that I am using. For now, I cannot

Re: Robust of cassandra

2013-10-29 Thread Neha Narkhede
What is the replication factor and have you checked if there are leader elections around the time you see the NoAvailableLeader exception? It is important to figure out the root cause of NoAvailableLeader, but it is transient and should fix itself. Are you using 0.8 HEAD ? On Tue, Oct 29, 2013 at

Robust of cassandra

2013-10-29 Thread Jiang Jacky
Hi, Everyone For now, I have a kafka cluster, and there is only 1 partition in each node. i just also produce lots of messages to 1 topic only. Then, I have a problem, I used it for a while, the topic is crashed, the error message is "NoAvailableLeader", but it is good for other topics that I do no