Re: 3.0.15 or 3.11.1

> > Can you please provide dome JIRAs for superior fixes and performance > improvements which are present in 3.11.1 but are missing in 3.0.15. > Some that come to mind… Cassandra Storage Engine: CASSANDRA-12269, CASSANDRA-12731 Streaming and Compaction: CASSANDRA-11206, CASSANDRA-9766,

Re: NVMe SSD benchmarking with Cassandra

> > > > > In regards to setting read ahead, how is this set for nvme drives? Also, > below is our compression settings for the table… It’s the same as our tests > that we are doing against SAS SSDs so I don’t think the compression > settings would be the issue… > > > Check blockdev --report

RE: NVMe SSD benchmarking with Cassandra

Hi Jeff, In regards to setting read ahead, how is this set for nvme drives? Also, below is our compression settings for the table… It’s the same as our tests that we are doing against SAS SSDs so I don’t think the compression settings would be the issue… CREATE KEYSPACE ycsb WITH replication

Re: how to check C* partition size

​>Nodetool tablestats gives you a general idea. Since C* 3.X :)

RE: how to check C* partition size

Nodetool tablestats gives you a general idea. Meg Mara From: Peng Xiao [mailto:2535...@qq.com] Sent: Sunday, January 07, 2018 9:26 AM To: user Subject: how to check C* partition size Hi guys, Could anyone please help on this simple question? How to check C*

Re: Rebuild to a new DC fails every time

None of the files is listed more than once in the logs: java.lang.RuntimeException: Transfer of file /fs3/cassandra/data//event_group-3b5782d08e4411e6842917253f111990/mc-116042-big-Data.db already completed or aborted (perhaps session failed?). java.lang.RuntimeException: Transfer of file

Re: Compaction: ThreadPool Metrics vs Compaction Metrics

Hello Ahmed, I have questioned about the compaction metrics in 27/10/2017. You may see the conversation here : Lucas Benevides 2018-01-05 14:13