Re: Log application Queries

Hello, Another way to do it would be to create your own QueryHandler: * create a class that would implement the QueryHandler interface and make Cassandra aware of it * in that class you can maintain a list of the queries (add to this list when prepare method is being called) and the cur

Re: cassandra concurrent read performance problem

Hi, Would you share some more context with us? - What Cassandra version do you use? - What is the data size per node? - How much RAM does the hardware have? - Does your client use paging? A few ideas to explore: - Try tracing the query, see what's taking time (and resources) - From the tracing,

nodetool (2.1.18) - Xmx, ParallelGCThreads, High CPU usage

Hello, on a quite capable machine with 32 physical cores (64 vCPUs) we see sporadic CPU usage up to 50% caused by nodetool on this box, thus digged a bit further. A few observations: 1) nodetool is reusing the $MAX_HEAP_SIZE environment variable, thus if we are running Cassandra with e.g. Xmx3

Certified Cassandra for Enterprise use

Is there any third party who provides security patches/releases for Apache cassandra For Enterprise use is there any third party who provides certified Apache cassandra packages ?? Thanks Pranay

Re: Certified Cassandra for Enterprise use

datastax From: Pranay akula Reply-To: "user@cassandra.apache.org" Date: Monday, May 28, 2018 at 5:12 PM To: "user@cassandra.apache.org" Subject: Certified Cassandra for Enterprise use Is there any third party who provides security patches/releases for Apache cassandra For Enterprise use is t

Re: nodetool (2.1.18) - Xmx, ParallelGCThreads, High CPU usage

> > 1) nodetool is reusing the $MAX_HEAP_SIZE environment variable, thus if we > are running Cassandra with e.g. Xmx31G, nodetool is started with Xmx31G as > well This was fixed in 3.0.11/3.10 in CASSANDRA-12739 . Not sure why it didn't make i

Re: Snapshot SSTable modified??

Unix timestamps are a bit odd. "mtime/Modify" is file changes, "ctime/Change/(sometimes called create)" is file metadata changes, and a link count change is a metadata change. This seems like an odd decision on the part of GNU tar, but presumably there's a good reason for it. When the original s

Re: Using K8s to Manage Cassandra in Production

Thank you everyone. This thread has been really useful! On Wed, May 23, 2018 at 8:59 PM, Ben Bromhead wrote: > Here is the expectations around compatibility levels https://github.com/ > kubernetes/community/blob/master/contributors/design- > proposals/api-machinery/csi-new-client-library-procedu