Re: Cluster performance degrades if any single node is slow

2010-07-07 Thread Stu Hood
y, July 7, 2010 11:50am To: user@cassandra.apache.org Subject: Re: Cluster performance degrades if any single node is slow On Wed, Jul 7, 2010 at 11:33 AM, Jonathan Ellis wrote: > Having a few requests time out while the service detects badness is > typical in this kind of system. I

Re: Cluster performance degrades if any single node is slow

2010-07-07 Thread Jonathan Ellis
On Wed, Jul 7, 2010 at 11:50 AM, Mason Hale wrote: > I'm curious of what performance benefit is actually being gained from this > optimization. It's really pretty easy to saturate gigabit ethernet with a Cassandra cluster. Mulitplying traffic by roughly RF is definitely a lose. > Sorry to keep

Re: Cluster performance degrades if any single node is slow

2010-07-07 Thread Mason Hale
On Wed, Jul 7, 2010 at 11:33 AM, Jonathan Ellis wrote: > Having a few requests time out while the service detects badness is > typical in this kind of system. I don't think writing a completely > separate StorageProxy + supporting classes to allow avoiding this in > exchange for RF times the net

Re: Cluster performance degrades if any single node is slow

2010-07-07 Thread Jonathan Ellis
Having a few requests time out while the service detects badness is typical in this kind of system. I don't think writing a completely separate StorageProxy + supporting classes to allow avoiding this in exchange for RF times the network bandwidth is a good idea. On Wed, Jul 7, 2010 at 11:23 AM,

Cluster performance degrades if any single node is slow

2010-07-07 Thread Mason Hale
We've been experiencing some cluster-wide performance issues if any single node in the cluster is performing poorly. For example this occurs if compaction is running on any node in the cluster, or if a new node is being bootstrapped. We believe the root cause of this issue is a performance optimiz