> Am I missing data here? Yes, but you can repair it with nodetool. > Is this means that my cluster is too loaded?
yes. http://spyced.blogspot.com/2010/01/linux-performance-basics.html) Use nodetool tpstats to see when tasks are backing up, check io throughput with iostat (see Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 26/01/2012, at 1:13 AM, Michael Vaknine wrote: > Hi, > I have a 1.0.3 cluster with 4 nodes and replication factor 3. > I have lots of messages like the following in my logs: > INFO [ScheduledTasks:1] 2012-01-25 07:07:18,410 MessagingService.java (line > 613) 510 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:07:23,420 MessagingService.java (line > 613) 129 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:07:28,429 MessagingService.java (line > 613) 2 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:07:33,788 MessagingService.java (line > 613) 1068 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:07:33,271 MessagingService.java (line > 613) 391 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 12:07:52,981 MessagingService.java (line > 613) 312 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:07:53,823 MessagingService.java (line > 613) 1004 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:07:53,304 MessagingService.java (line > 613) 443 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:08:08,854 MessagingService.java (line > 613) 515 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:08:13,863 MessagingService.java (line > 613) 225 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 12:08:28,047 MessagingService.java (line > 613) 790 MUTATION messages dropped in last 5000ms > INFO [ScheduledTasks:1] 2012-01-25 07:08:28,374 MessagingService.java (line > 613) 833 MUTATION messages dropped in last 5000ms > > Am I missing data here? > Is this means that my cluster is too loaded? > > Thanks > Michael
