Re: Cassandra: Inconsistent data on reads (LOCAL_QUORUM)

2018-10-20 Thread Mick Semb Wever
> Thanks James. Yeah, we're using the datastax java driver. But we're on > version 2.1.10.2. And we are not using the client side timestamps. Just to check Ninad. If you are using Cassandra-2.1 (native protocol v3) and the java driver version 3.0 or above, then you would be using client-side

Re: High CPU usage on some of the nodes due to message coalesce

2018-10-20 Thread Chris Lohfink
1s young gcs are horrible and likely cause of some of your bad metrics. How large are your mutations/query results and what gc/heap settings are you using? You can use https://github.com/aragozin/jvm-tools to see the threads generating allocation

High CPU usage on some of the nodes due to message coalesce

2018-10-20 Thread onmstester onmstester
3 nodes in my cluster have 100% cpu usage and most of it is used by  org.apache.cassandra.util.coalesceInternal and SepWorker.run? The most active threads are the messaging-service-incomming. Other nodes are normal, having 30 nodes, using Rack Aware strategy. with 10 rack each having 3 nodes.