Re: scylladb

On Fri, Mar 10, 2017 at 4:45 PM, Kant Kodali wrote: > http://performanceterracotta.blogspot.com/2012/09/numa-java.html > http://docs.oracle.com/javase/7/docs/technotes/guides/vm/ > performance-enhancements-7.html > http://openjdk.java.net/jeps/163 > > Java can exploit NUMA but it's not as a effic

Re: scylladb

http://performanceterracotta.blogspot.com/2012/09/numa-java.html http://docs.oracle.com/javase/7/docs/technotes/guides/vm/performance-enhancements-7.html http://openjdk.java.net/jeps/163 If scyllaDB has efficient Secondary indexes, LWT and MV's then that is something. I would be glad to see how th

Re: scylladb

Scylla isn't just about performance too. First, a disclaimer, I am a Scylla co-founder. I respect open source a lot, so you guys are welcome to shush me out of this thread. I only participate to provide value if I can (this is a thread about Scylla and our users are on our mailing list). Scylla i

RE: scylladb

Cassandra is not about pure performance, there are many other DBs that are much faster than Cassandra. Cassandra strength is all about scalability, performance increases in a linear way as you add more nodes. During Cassandra summit 2014 Apple said they have a 10k node cluster. The usual limitin

Re: scylladb

Cassanda vs Scylla is a valid comparison because they both are compatible. Scylla is a drop-in replacement for Cassandra. Is Aerospike a drop-in replacement for Cassandra? If yes, and only if yes, then the comparison is valid with Scylla. From: Bhuvan Rawal To

Re: scylladb

Agreed C++ gives an added advantage to talk to underlying hardware with better efficiency, it sound good but can a pice of code written in C++ give 1000% throughput than a Java app? Is TPC design 10X more performant than SEDA arch? And if C/C++ is indeed that fast how can Aerospike (which is itsel

[RELEASE] Apache Cassandra 3.0.12 released

The Cassandra team is pleased to announce the release of Apache Cassandra version 3.0.12. Apache Cassandra is a fully distributed database. It is the right choice when you need scalability and high availability without compromising performance. http://cassandra.apache.org/ Downloads of source a

Re: A Single Dropped Node Fails Entire Read Queries

I may be mistaken on the exact configuration option for the timeout you're hitting, but I believe this may be the general `request_timeout_in_ms: 1` in conf/cassandra.yaml. A reasonable timeout for a "node down" discovery/processing is needed to prevent random flapping of nodes with a super sh

Re: HELP with bulk loading

Hi, >3. sstableloader is slow too. Assuming that I have new empty C* cluster, how can I improve the upload speed? Maybe disable replication or some other settings while streaming and then turn it back? Maybe you can accelerate you load with the option -cph (connection per host): https://issues.ap

Re: A Single Dropped Node Fails Entire Read Queries

Hi daniel, I don't think that's a network issue, because ~10 seconds after the node stopped, the queries were successful again without any timeout issues. Thanks! Shalom Sagges DBA T: +972-74-700-4035

Re: A Single Dropped Node Fails Entire Read Queries

Could there be network issues in connecting between the nodes? If node a gets To be the query coordinator but can't reach b and c is obviously down it won't get a quorum. Greetings Shalom Sagges schrieb am Fr. 10. März 2017 um 10:55: > @Ryan, my keyspace replication settings are as follows: > CR

Re: A Single Dropped Node Fails Entire Read Queries

@Ryan, my keyspace replication settings are as follows: CREATE KEYSPACE mykeyspace WITH replication = {'class': 'NetworkTopologyStrategy', 'DC1': '3', 'DC2: '3', 'DC3': '3'} AND durable_writes = true; CREATE TABLE mykeyspace.test ( column1 text, column2 text, column3 text, PRIMARY

Re: A Single Dropped Node Fails Entire Read Queries

The LOCAL_QUORUM works on the available replicas in the dc. So if your replication factor is 2 and you have 10 nodes you can still only loose 1. With a replication factor of 3 you can loose one node and still satisfy the query. Ryan Svihla schrieb am Do. 9. März 2017 um 18:09: > whats your keyspa