We are exploring apache cassandra and are going to use it for Production soon.
We are going to use mostly Datastax community edition of apache cassandra.
But after reading :
http://www.planetcassandra.org/blog/cassandra-2-2-3-0-and-beyond/
https://www.pythian.com/blog/cassandra-version-production/
With this sentence from above blog “If you don’t mind facing serious bugs and contribute to the development pick 3.x”
I am confused about which version to opt for our production deployment ?
Just need to know whether 3.5.0 and 3.0.6 are production ready.
Datastax community : 3.5.0 from http://www.planetcassandra.org/cassandra/
Datastax community : 3.0.6 from
http://www.planetcassandra.org/archived-versions-of-datastaxs-distribution-of-apache-cassandra/
or
Datastax community : 2.2.6 from
http://www.planetcassandra.org/archived-versions-of-datastaxs-distribution-of-apache-cassandra/
The version provided by datastax is supposed to be stable and production ready. You have an application to monitor your cluster, which is nice if you don't have any ops that knows about cassandra in the first place, and you can pay to get support.
However, you don't have the latest version of Cassandra, and you can miss interesting features.
As for Cassandra 3.x, as said above, you get more features (for example JSON support) and better performance, but if you find a critical bug and can't fix it, you can only writes a ticket and hope they will take care of it quickly. Yet it is production ready and this could work well for you.
In conclusion, go for the latest version only if you need a special feature, or if you have the developers in your team to back your choice. Go for Datastax if you want something that works with less effort.
I've having some issues with my Cassandra cluster and I would like to install OpsCenter Community in order to debug what's going on.
I've found this and this pages talking about the compatibility between DataStax OpsCenter and Cassandra, but this don't list Cassandra 2.2.5 (actually I'm using DataStax Cassandra - dsc 22).
My question is: can I use DataStax OpsCenter (free / community version) within Cassandra 2.2.5? If not, there's an alternative?
No, the docs you cited indicate that OpsCenter doesn't support any cassandra greater than 2.1.x and the next version of opscenter (6.x) will only support Datastax Enterprise. I don't know of another visual front-end to cassandra at this time.
I am trying to use the Business Intelligence (BI) software Tableau Desktop to see into a local Cassandra cluster. The Cassandra cluster is the open-source version and not the proprietary version that one pays to use. The version of Cassandra I am using is 2.2.x.
I can successfully connect Cassandra and Tableau after configuring the 64 bit ODBC driver. However, actually querying the tables in the NoSQL database throws errors. For instance in the 'Data Source' view selecting 'Update Now' results in an error from a SQL statement that starts with SELECT 1... I do not think Cassandra can understand, process, SELECT 1 statements.
Errors are also thrown when trying to build graphs of the data as this also results in failed queries.
In the 'Advanced Options' for the ODBC driver I selected to use CQL as the 'Query Mode' and still there were problems with the queries Tableau was sending to Cassandra.
Does anyone know how to get these two technologies to work together? I found this tutorial but it was made almost a year ago, as of this writing, and does not work from my experience. Please see the link to what I am talking about here: http://www.datastax.com/dev/blog/datastax-odbc-cql-connector-apache-cassandra-datastax-enterprise In this article they say to download the driver from here: https://academy.datastax.com/downloads/download-drivers?dxt=DX I am wondering this specific version of the ODBC driver is the problem.
I also read a previous post on this and it was not helpful as it is also obsolete from my experience. The post I am referring to is at the following URL: Connecting cassandra to Tableau Software The first answer is probably the obsolete one but the second one recommends to use the Simba driver, which is some type of proprietary driver. My current hypotheses is maybe the Simba driver is needed to use Tableau and Cassandra together.
Thank-you for reading this.
DataStax licenses Simba Technologies ODBC driver, but the version on their website may be behind the latest version available from Simba. Please download a free evaluation version of the driver and see if you have the same issue: http://www.simba.com/drivers/cassandra-odbc-jdbc/
'SELECT 1' is not a valid CQL query (http://docs.datastax.com/en/cql/3.1/cql/cql_reference/select_r.html).
Can I install and start Cassandra into a x-linux OS with a IBM SDK for Java?
Will that work? Any specific version? 2.1, 2.0 that will work ?
Thanks in advance.
You are right, it should work. The only issue is in the Cassandra-env.sh, you need to comment out some checking.
Yes it should. According to the Apache Cassandra project site:
Cassandra requires the most stable version of Java 7 or 8 you can deploy, preferably the Oracle/Sun JVM. Cassandra also runs on OpenJDK and the IBM JVM.
As far as I can tell, it doesn't indicate that only specific versions of Cassandra work with the IBM JVM. That being said, the documentation on the DataStax site specically mentions the Oracle JVM in the installation steps. It is the recommeded JVM to use.
I can't remember for sure, but I have heard of people running into issues that were traced back to the OpenJDK. I don't recall anything specific to the IBM JVM. So it might work, but it isn't supported and you might leave yourself open to some unforeseen errors.
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations.
Closed 6 years ago.
Improve this question
Is Datastax Cassandra the only available Cassandra that can be used in a production environment? Is there any free alternatives available? What about the cassandra available on Apache site?
Datastax Community Edition is also free, it contains a basic version of OpsCenter -- http://planetcassandra.org/cassandra/
Here is the difference between the community edition and DSE
http://www.datastax.com/download/dse-vs-dsc
They can both be used in production. DataStax Enterprise comes with a bunch of extra features on top of Apache Cassandra, and also comes with support.
Datastax is a commercial company, who supports C*. The base source code of Cassandra is taken of the Apache Repositories, then some of their own code is merged. Besides this, as already mentioned by others, Datastax version comes with some additional tools for maintaining a Cassandra Cluster.
One of the benefits of Datastax Enterprise is their neatless SOLR Integration, another great Apache Foundation Project.
Cassandra comes with a Query Language called CQL (Cassandra Query Language) which is "similar" to SQL, you should however think of CQL like a cousin of SQL, not a brother.
One of the great features of the Enterprise edition is that you can query a SOLR index through their CQL integration, also a Cassandra Cluster shares it's resources with SOLR, so you don't need a second Cluster for SOLR.
You could... set up Apache or Datastax Cassandra, you would get almost the same thing, but if you need something similar to SQL Like Statement (natively not available in Cassandra), or you do have a very much denormalized database and you need search capabilities, then Datstax Enterprise (DSE) is your only viable choice.
As someone already has mentioned, DSE is free for startups until they reach an annual revenue of 3m USD, or are funded with 30m. This should give everybody the opportunity to leverage the power of NoSQL and use one of the most reliable databases for big data out there.
For the Cassandra product, you can use the Apache open source offering in production, if your organisation is comfortable with open source.
You can also use the Datastax Community version of Cassandra, which is also open source and free to deploy; that gives you a bit more assurance from DataStax who offer commercial support.
Then there is DataStax Enterprise, which is the version that you pay to use, with a support model included. This still uses open source Cassandra, with additional code from DataStax. They have also put this release through their internal test processes, so that they are happy to support it. That generally means the releases will lag that Apache and Community versions, if that matters to you.
The DataStax 'Dev Center' product is a GUI tool that allows you to enter CQL commands against a Cassandra installation - it is free to use against any release. You may find it useful, though the CQLSH command-line should offer much of what you may need (and Cassandra CLI).
The DataStax 'Ops Center' product is available in a free version, which can run against any Cassandra with the associated 'DataStax Agent' used to collect data from each node. The Enterprise version of Ops Center includes additional functionality; that is available if you purchase the fully support DSE (DataStax Enterprise) stack.
Hope that helps. Much more information available at Planet Cassandra and the DataStax web sites.
Besides Apache Cassandra, there's Scylla which is a drop in replacement for Cassandra written in C++. It claims to be 10 times faster than Apache Cassandra. However, Scylla is still in alpha version, and you should stay away from it in a production environment.
Scylla aims to support all cassandra features together with toolings. It also supports JMX monitoring.
Apache Cassandra also have all features as well as community edition of DataStax . So you can put Apache Cassandra on Production enivorment .
Another good feature of DSE is the ability to do backup and recovery of your Cassandra database which I would think is very important if you are planning to use this in a production setup.