Re: Instaclustr Masters scholarship

A bunch more welcome than here in the US, to our deep shame and foolishness. Sadly while I am actually involved in this area, I am happy in San Francisco. I would be interested in being part of a pro bono team should that transpire. Thanks, D. *...* *Daemeon C.M. ReiydelleUSA (+1)

Instaclustr Masters scholarship

As part of our commitment to contributing back to the Apache Cassandra open source project and the wider community we are always looking for ways we can foster knowledge sharing and improve usability of Cassandra itself. One of the ways we have done so previously was to open up our internal builds

Re: Authentication with Java driver

On Tue, 7 Feb 2017 at 17:52 Yuji Ito wrote: Thanks Andrew, Ben, My application creates a lot of instances connecting to Cassandra with basically the same set of credentials. Do you mean lots of instances of the process or lots of instances of the cluster/session object?

Re: Authentication with Java driver

Thanks Andrew, Ben, My application creates a lot of instances connecting to Cassandra with basically the same set of credentials. After an instance connects to Cassandra with the credentials, can any instance connect to Cassandra without credentials? == example == A first = new A("database",

Re: AW: Why does CockroachDB github website say Cassandra has noAvailability on datacenter failure?

https://github.com/cockroachdb/cockroach/commit/f46a547827d3439b57baa5c3a11f8f9ad2d8b153 On Tue, Feb 7, 2017 at 3:20 PM, Kant Kodali wrote: > LOL They took down that image finally!! But I would still keep an eye on > what kind of fake benchmarks they might come up with. > >

Re: Authentication with Java driver

What are you specifically trying to achieve? Are you trying to authenticate multiple Cassandra users from a single application instance? Or will your have lot's of application instances connecting to Cassandra using the same set of credentials? Or a combination of both? Multiple application

Re: UnknownColumnFamilyException after removing all Cassandra data

To further add to my previous answer, the node in question is a seed node, so it did not bootstrap. Should I remove it from the list of seed nodes and then try to restart it? Simone Franzini, PhD http://www.linkedin.com/in/simonefranzini On Tue, Feb 7, 2017 at 9:43 AM, Simone Franzini

Re: UnknownColumnFamilyException after removing all Cassandra data

This is exactly what I did on the second node. If this is not the correct / best procedure to adopt in these cases, please advise: 1. Removed all the data, including the system table (rm -rf data/ commitlog/ saved_caches). 2. Configured the node to replace itself, by adding the following line to

Re: AW: Why does CockroachDB github website say Cassandra has noAvailability on datacenter failure?

It indeed is a marketing gimmick. By clubbing Cassandra with likes of HBase that favors consistency over availability, points under cons section are all true, just not true when applied to any one database from that group. Thanks and Regards Amit Trivedi On Feb 7, 2017, 7:32 AM -0500,

Re: Authentication with Java driver

Hello, The API seems kind of not correct because credentials should be > usually set with a session but actually they are set with a cluster. > With the datastax driver, Session is what manages connection pools to each node. Cluster manages configuration and a separate connection ('control

Re: Authentication with Java driver

Hi, The API seems kind of not correct because credentials should be usually set with a session but actually they are set with a cluster. So, if there are 1000 clients, then with this API it has to create 1000 cluster instances ? 1000 clients seems usual if there are many nodes (say 20) and each

AW: Why does CockroachDB github website say Cassandra has noAvailability on datacenter failure?

Deeper inside there is a diagram: https://raw.githubusercontent.com/cockroachdb/cockroach/master/docs/media/sql-nosql-newsql.png They compare to NoSQL along with Riak, HBase and Cassandra. Of course you CAN have a Cassandra cluster which is not fully available with loss of a dc nor

Re: Why does CockroachDB github website say Cassandra has no Availability on datacenter failure?

Ask for forgiveness not for permission if you do marketing ;) Am 07.02.2017 13:11 schrieb "Kant Kodali" : > lol. But seriously are they even allowed to say something that is not true > about another product ? > > On Tue, Feb 7, 2017 at 4:05 AM, kurt greaves

Re: Why does CockroachDB github website say Cassandra has no Availability on datacenter failure?

lol. But seriously are they even allowed to say something that is not true about another product ? On Tue, Feb 7, 2017 at 4:05 AM, kurt greaves wrote: > Marketing never lies. Ever >

Re: Why does CockroachDB github website say Cassandra has no Availability on datacenter failure?

Marketing never lies. Ever

Re: UnknownColumnFamilyException after removing all Cassandra data

The node is trying to communicate with another node, potentially streaming data, and is receiving files/data for an "unknown column family". That is, it doesn't know about the CF with the id e36415b6-95a7-368c-9ac0- ae0ac774863d. If you deleted some columnfamilies but not all the system keyspace

Re: Why does CockroachDB github website say Cassandra has no Availability on datacenter failure?

The link you posted doesn't say anything about Cassandra Le 7 févr. 2017 11:41, "Kant Kodali" a écrit : > Why does CockroachDB github website say Cassandra has no Availability on > datacenter failure? > > https://github.com/cockroachdb/cockroach >

Why does CockroachDB github website say Cassandra has no Availability on datacenter failure?

Why does CockroachDB github website say Cassandra has no Availability on datacenter failure? https://github.com/cockroachdb/cockroach