RE: Anyone try out C* with latest Oracle JDK update?

Hi Sam, in our pre-production stages, we are running Cassandra 3.0 and 3.11 with 8u172 (previously u102 then u162) without any visible troubles/regressions. In case of Cassandra 3.11, you need 3.11.2 due to: https://issues.apache.org/jira/browse/CASSANDRA-14173. Cassandra 3.0 is not affected

Re: Cassandra HEAP Suggestion.. Need a help

JVM GC tuning can be pretty complex, but the simplest solution to OOM is probably switching to G1GC and feeding it a rather large heap. Theoretically a smaller heap and carefully-tuned CMS collector is more efficient, but CMS is kind of fragile and tuning it is more of a black art, where you can

Re: repair in C* 3.11.2 and anticompactions

Hi Jean, Here is what Alexander wrote about it, a few months ago, in the comments of the article mentioned above: "A full repair is an incremental one that doesn't skip repaired data. > Performing anticompaction in that case too (regardless it is a valid > approach or not) allows to mark as

Re: repair in C* 3.11.2 and anticompactions

Thanks alain and Lerh, It is clear now. In order to avoid problems and charge in the cluster doing anticompactions, I am going to use repair by sub ranges. I studied this tool called cassandra-list-subranges it seems it still works for

Re: repair in C* 3.11.2 and anticompactions

Jean, Have you considered nodetool repair -pr (primary range) OR reaper? With Reaper you can throttle repair load on system. These two uses ranges anyway, so you may not run into anti-compaction. Regards, Nitan K. Cassandra and Oracle Architect/SME Datastax Certified Cassandra expert Oracle 10g

Re: Question About Reaper

What is the impact of PARALLEL - all replicas at the same time ? Will it make repair faster,? Do we expect more CPU , Load and memory usage in case if we use Parallel , compare to other settings ? On 21 May 2018 at 22:55, Alexander Dejanovski wrote: > You won't be able

Reading Data from C* Cluster

HI I want to read data from C* Cluster. Schema is CREATE TABLE code( campaign_id_sub_partition text code text, PRIMARY KEY ((campaign_id_sub_partition),code)) ); Where I can have configurable codes in partition key as cassandra supports. campaign_id_sub_partition is appx 10 characters code

Re: Question About Reaper

Another question, We use 9142 cqlsh port in one of the datacenter and on other datacenter we use 9042 port. How should we configure this ? On 24 May 2018 at 10:22, Surbhi Gupta wrote: > What is the impact of > PARALLEL - all replicas at the same time ? > Will it make

Using compressed hints in Cassandra 3.0

Hi, Have anyone used compressed hints in Cassandra 3.0? or are we the only ones that do this? If you use compressed hints have ever seen that sending the hints fails and you get this exception in the log: 2018-04-04T13:27:48.948+0200 ERROR [HintsDispatcher:14] CassandraDaemon.java:207

Re: Anyone try out C* with latest Oracle JDK update?

Hi Thomas, That’s helpful. We are already at C* 3.11.1 with 8u152. Best, Sam > On May 24, 2018, at 2:51 AM, Steinmaurer, Thomas > wrote: > > Hi Sam, > > in our pre-production stages, we are running Cassandra 3.0 and 3.11 with > 8u172 (previously u102 then

Re: Snapshot SSTable modified??

Jeff, Shouldn't Snapshot get consistent state of sstables? -tmp file shouldn't impact backup operation right? Regards, Nitan K. Cassandra and Oracle Architect/SME Datastax Certified Cassandra expert Oracle 10g Certified On Wed, May 23, 2018 at 6:26 PM, Jeff Jirsa wrote: >

Re: Question About Reaper

Getting below error: Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:397)

Re: Question About Reaper

looks like you're connecting to a service listening on SSL but you don't have the CA used in your truststore On Thu, May 24, 2018 at 1:58 PM, Surbhi Gupta wrote: > Getting below error: > > Caused by: sun.security.validator.ValidatorException: PKIX path building >

unsubscribe

Ciao

Re: Question About Reaper

Do we have to setup the reaper on one of the node where Cassandra cluster is running? We are using a separate node where we have the connectivity to the Cassandra cluster . We have tried with the certificate settings in /usr/local/bin/cassandra-reaper We have put below in