Query on Cassandra clusters

2016-12-20 Thread Sumit Anvekar
I have a couple questions. 1. I have a Cassandra cluster with 11 nodes, 5 of which have Cassandra version 3.0.3 and then newer 5 nodes have 3.6.0 version. I has been running fine until recently I am seeing higher amount of data residing in newer boxes. The configuration file (YAML file) is exactly

Why does Cassandra recommends Oracle JVM instead of OpenJDK?

2016-12-20 Thread Kant Kodali
Looking at this http://www.theregister.co.uk/2016/12/16/oracle_targets_java_users_non_compliance/?mt=1481919461669 I don't know why Cassandra recommends Oracle JVM? JVM is a great piece of software but I would like to stay away from Oracle as much as possible. Oracle is just horrible the way they

Re: Handling Leap second delay

2016-12-20 Thread Harikrishnan Pillai
http://www.datastax.com/dev/blog/preparing-for-the-leap-second-2017 [http://www.datastax.com/wp-content/themes/datastax-2013/images/common/logo.png] Preparing for the Leap Second, 2017 Jan 1 Edition | DataStax

Handling Leap second delay

2016-12-20 Thread Sanjeev T
Hi, Can some of you share points on, the versions and handling leap second delay on Dec 31, 2016. Regards -Sanjeev

Re: iostat -like tool to parse 'nodetool cfstats'

2016-12-20 Thread kurt Greaves
Anything in cfstats you should be able to retrieve through the metrics Mbeans. See https://cassandra.apache.org/doc/latest/operating/metrics.html On 20 December 2016 at 23:04, Richard L. Burton III wrote: > I haven't seen anything like that myself. It would be nice to have > nodetool cfstats to

Re: Join_ring=false Use Cases

2016-12-20 Thread Carlos Rolo
Beware the Java Driver limitations around whitelisting IPs. Works fine in Python. Regards, Carlos Juzarte Rolo Cassandra Consultant / Datastax Certified Architect / Cassandra MVP Pythian - Love your data rolo@pythian | Twitter: @cjrolo | Skype: cjr2k3 | Linkedin: *linkedin.com/in/carlosjuzar

Re: iostat -like tool to parse 'nodetool cfstats'

2016-12-20 Thread Richard L. Burton III
I haven't seen anything like that myself. It would be nice to have nodetool cfstats to be presented in a nicier format. If you plan to work on that, let me know. I would help contribute to it next month. On Tue, Dec 20, 2016 at 5:59 PM, Kevin Burton wrote: > nodetool cfstats has some valuable d

iostat -like tool to parse 'nodetool cfstats'

2016-12-20 Thread Kevin Burton
nodetool cfstats has some valuable data but what I would like is a 1 minute delta. Similar to iostat... It's easy to parse this but has anyone done it? I want to see IO throughput and load on C* for each table. -- We’re hiring if you know of any awesome Java Devops or Linux Operations Enginee

Re: Incremental repair for the first time

2016-12-20 Thread kurt Greaves
No workarounds, your best/only option is to upgrade (plus you get the benefit of loads of other bug fixes). On 16 December 2016 at 21:58, Kathiresan S wrote: > Thank you! > > Is any work around available for this version? > > Thanks, > Kathir > > > On Friday, December 16, 2016, Jake Luciani wro

Re: Join_ring=false Use Cases

2016-12-20 Thread Matija Gobec
There is a talk from cassandra summit 2016 about coordinator nodes by Eric Lubow from SimpleReach. He explains how you can use that join_ring=false. On Tue, Dec 20, 2016 at 10:23 PM, kurt Greaves wrote: > It seems that you're correct in saying that writes don't propagate to a > node that has joi

Re: Join_ring=false Use Cases

2016-12-20 Thread kurt Greaves
It seems that you're correct in saying that writes don't propagate to a node that has join_ring set to false, so I'd say this is a flaw. In reality I can't see many actual use cases in regards to node outages with the current implementation. The main usage I'd think would be to have additional coor

Cipher Suite Cassandra 2.1.14 Encryption

2016-12-20 Thread Jacob Shadix
I was testing client encryption w/cqlsh and get the following error when using TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 as the cipher. Any ideas why? Last error: _ssl.c:492: EOF occurred in violation of protocol")}) -- Jacob Shadix

Re: Join_ring=false Use Cases

2016-12-20 Thread Anuj Wadehra
No responses yet :) Any C* expert who could help on join_ring use case and the concern raised? Thanks Anuj On Tue, 13 Dec, 2016 at 11:31 PM, Anuj Wadehra wrote: Hi, I need to understand the use case of join_ring=false in case of node outages. As per https://issues.apache.org/jira/browse/C

RE: FW: Cassandra trigger to send notifications

2016-12-20 Thread Oren Yekutieli
Got it. Thanks! Regards, Oren From: DuyHai Doan [mailto:doanduy...@gmail.com] Sent: Tuesday, December 20, 2016 10:11 AM To: user@cassandra.apache.org Subject: Re: FW: Cassandra trigger to send notifications Right now CDC is very very LOW LEVEL, you'll need to 1. Use a CommitLogReader to read th

Re: FW: Cassandra trigger to send notifications

2016-12-20 Thread DuyHai Doan
Right now CDC is very very LOW LEVEL, you'll need to 1. Use a CommitLogReader to read the changes from the CDC files 2. Perform de-duplication by yourself I'll blog post a technical deep dive about CDC in the future once I have time to play with it On Mon, Dec 19, 2016 at 9:57 PM, Oren Yekutieli