Re: Reading Commit log files

2016-11-27 Thread Kamesh
Hi All, I am able to read cdc events from key spaces like *system *and *system_schema, *but not from the one that I created. Any help on this?. Thanks & Regards Kamesh. On Wed, Nov 23, 2016 at 9:14 PM, Kamesh wrote: > Hi Carlos, > durable_writes = true. > >

Re: Java GC pauses, reality check

2016-11-27 Thread Bill Hastings
Hi Hari Could you share your G1GC settings please? On Sun, Nov 27, 2016 at 9:57 PM, Harikrishnan Pillai < hpil...@walmartlabs.com> wrote: > Hi @Kant Kodali, > > We have multiple clusters running zing . > > One cluster has 11/11 and another one also has 11/11.(190 GB mem,6TB hard > disk and 16

Re: Java GC pauses, reality check

2016-11-27 Thread Harikrishnan Pillai
Hi @Kant Kodali, We have multiple clusters running zing . One cluster has 11/11 and another one also has 11/11.(190 GB mem,6TB hard disk and 16 Physical core machines) The average read size is around 200KB and it can go upto 6 MB. We are using g1GC in most clusters with 26GB heap and extra

Cassandra Multi DC with diff version.

2016-11-27 Thread Abhishek Kumar Maheshwari
Hi All, We have 2 Cassandra DC with below config: DC1: In DC1 we have 9 Servers with 64 GB ram 40 Core machines. In this DC we have Cassandra version: 2.1.4. And We have 2 TB data on each server. Application is connected with DC. DC2: In DC2 we have 5 Servers with 64 GB ram 40 Core machines.

Re: Does recovery continue after truncating a table?

2016-11-27 Thread Yuji Ito
Thanks Ben and Hiro, I've reported it at https://issues.apache.org/jira/browse/CASSANDRA-12960. I'll use `truncatehints` or DROP command after this. On Sun, Nov 27, 2016 at 12:33 PM, Ben Slater wrote: > By “undocumented limitation”, I meant “TRUNCATE” is mainly

Re: Java GC pauses, reality check

2016-11-27 Thread Benjamin Roth
Maybe I was not totally clear. Reference counting is of course done at runtime but the compiler automates where + when to do the counting. Before, the developer had to retain + release objects manually. Since ARC, this is done by the compiler at file level. Nothing is "free" in this world. There

Re: Java GC pauses, reality check

2016-11-27 Thread Jonathan Haddad
Reference counting happens at run time, not compile time. It's not free either. Every time a reference is added, there's overhead in tracking it. It also doesn't catch cycles. You still need garbage collection to avoid memory leaks. On Sun, Nov 27, 2016 at 12:31 AM Benjamin Roth

Re: Java GC pauses, reality check

2016-11-27 Thread Benjamin Roth
I didn't even know there are plans to move to TPC in Cs. Thanks for that update. After all I will follow the development of both Scylla and Cs and am excited about the future of both! Am 27.11.2016 10:02 schrieb "Kant Kodali" : > Yes I am well aware of Scyalldb. It might be

Re: Java GC pauses, reality check

2016-11-27 Thread Kant Kodali
Yes I am well aware of Scyalldb. It might be well written in C++ but the performance gain they are claiming has very little to do with moving from Java to C++. They had major design changes such as moving away from SEDA to TPC and so on. Moreover I would say it still needs to mature. Lot of users