Re: Cassandra client drivers

Thanks Andy On Monday, May 7, 2018, Andy Tolbert wrote: > Hi Abdul, > > If you are already at C* 3.1.0 and the driver you are using works, it's > almost certain to also work with 3.11.2 as well as there are no protocol > changes between these versions. I would

Re: Cassandra client drivers

Hi Abdul, If you are already at C* 3.1.0 and the driver you are using works, it's almost certain to also work with 3.11.2 as well as there are no protocol changes between these versions. I would advise testing your application out against a 3.11.2 test environment first though, just to be safe

Re: compaction: huge number of random reads

If you've got small partitions/small reads you should test lowering your compression chunk size on the table and disabling read ahead. This sounds like it might just be a case of read amplification. On Tue., 8 May 2018, 05:43 Kyrylo Lebediev, wrote: > Dear Experts, > >

Cassandra client drivers

Hi I am.planning for upgrade from 3.1.0 to 3.11.2 , just wanted to confirm if cleint drivers need to upgraded? Or it will work with 3.1.0 drivers?

compaction: huge number of random reads

Dear Experts, I'm observing strange behavior on a cluster 2.1.20 during compactions. My setup is: 12 nodes m4.2xlarge (8 vCPU, 32G RAM) Ubuntu 16.04, 2T EBS gp2. Filesystem: XFS, blocksize 4k, device read-ahead - 4k /sys/block/vxdb/queue/nomerges = 0 SizeTieredCompactionStrategy After

Auto Compactions not running on Cassandra 3.10

Hi We are using 4 node cassandra 3.10 cluster. For some reason autocompaction is not running on one of the table which uses DTCS. TTL on this table is 3 months. Table has high write load , and medium read load. We have 4 disks per node , each disk growed to around 5k-6k sstables going back to

Re: 3.11.2 io.netty.channel.unix.FileDescriptor.readAddress(...)(Unknown Source)

Hi! You are talking about messages like below, right? INFO [epollEventLoopGroup-2-8] 2018-05-05 16:57:45,537 Message.java:623 - Unexpected exception during request; channel = [id: 0xa4879fdd, L:/10.175.20.112:9042 - R:/10.175.20.73:2508] io.netty.channel.unix.Errors$NativeIoException: