Re: node replacement failed

2018-09-14 Thread onmstester onmstester
Thanks, I am still thinking about it, but before going deeper, is this still an issue for you at the moment? Yes, It is.

Storage overhead for a row

2018-09-14 Thread Nitan Kainth
Hi, We are trying to get to exact size of a row in table. All the data is standard sized. As per dev team, partition size should be 10832 bytes. But as per tablehistograms partition size is 17084 As per

Re: Regarding migrating data from Oracle to Cassandra.migrate data from Oracle to Cassandra.

2018-09-14 Thread sha p
Hi All, Is there any free Cassandra IDEs available? If so please share? what is advantages of enterprise edition IDEs? Regards, Shyam On Wed, Sep 5, 2018 at 6:51 PM sha p wrote: > > Hi all , >> Me new to Cassandra , i was asked to migrate data from Oracle to >> Cassandra. >> Please help me

Re: nodetool rebuild

2018-09-14 Thread Vitali Dyachuk
None of these throttling are helpful for streaming if you have even a 150-200 Mbit/s bandwidth which is affordable in any cloud. Tweaking network tcp memory, window size etc does not help, the bottleneck is not the network. These are my findings on how streaming is limited in C* 3.0.* 1)

Apache Thrift library 0.9.2 update due to security vulnerability?

2018-09-14 Thread Steinmaurer, Thomas
Hello, a Blackduck security scan of our product detected a security vulnerability in the Apache Thrift library 0.9.2, which is shipped in Cassandra up to 3.11 (haven't checked 4.0), also pointed out here:

Re: Default Single DataCenter -> Multi DataCenter

2018-09-14 Thread Alain RODRIGUEZ
Hello, > Q. Isn't it a problem that at this point, DCAwareRobinPolicy and > RoundRobinPolicy coexist? Why not change it on all clients at once? But no, it should not be a problem as long as you have only 1 DC. Q1. Must I add the new seed nodes in five all existing nodes? > I generally pick

Re: node replacement failed

2018-09-14 Thread Alain RODRIGUEZ
Hello Also i could delete system_traces which is empty anyway, but there is a > system_auth and system_distributed keyspace too and they are not empty, > Could i delete them safely too? I would say no, not safely, as I am not sure about some of them, but maybe this would work. Here is what I

Re: Read timeouts when performing rolling restart

2018-09-14 Thread Alain RODRIGUEZ
Hello Riccardo. Going to VPC, use GPFS and NTS all sounds very reasonable to me. As you said, that's another story. Good luck with this. Yet the current topology should also work well and I am wondering why the query does not find any other replica available. About your problem at hand: It's

Re: Regarding migrating data from Oracle to Cassandra.migrate data from Oracle to Cassandra.

2018-09-14 Thread sha p
Thanks a lot Rahul sir, Where can I find more information ? any blog or links on that ? On Mon, Sep 10, 2018 at 6:52 PM Rahul Singh wrote: > Look into Kafka Connect. It does tracking internally in a topic. Works > better going from relational to Cassandra. > > Still won’t fix your potential

Re: cold vs hot data

2018-09-14 Thread Mateusz
On piątek, 14 września 2018 02:46:43 CEST Alaa Zubaidi (PDF) wrote: > The data can grow to +100TB however the hot data will be in most cases less > than 10TB but we still need to keep the rest of data accessible. > Anyone has this problem? > What is the best way to make the cluster more efficient?