Blackbird TechTalks v2.0 – Eddie Garcia

In April, we welcomed Eddie Garcia, the VP of Information Security and ex-Architect at Gazzang.com to join us for a chat about Cassandra. In this talk, he starts the discussion with the AWS configurations he’s seen perform best in real…

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What Is Cassandra?

[youtube https://www.youtube.com/watch?v=rUuGXWH-cSQ?rel=0&w=560&h=315]

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Bulk Loading Options for Cassandra

Cassandra’s bulk loading interfaces are most useful in two use cases: initial migration or restore from another datastore/cluster and regular ETL. Bulk loading assumes that it’s important to you to avoid loading via the thrift interface, for example because you…

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My First Experience with Cassandra – Part 1

The traditional NoCOUG SQL challenge has been launched this year with a twist: In the wake of the “BigData” trend/buzz, it’s now been upgraded to a “SQL and/vs. NoSQL” challenge. I took on the challenge, treading through my SQL comfort zone and thinking of ways I could bend relational algebra to solve the wicked puzzle suggested this year.

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Quick script to get list of all jmx beans

Recently I’ve needed to get information from running Cassandra processes, in order to determine which parameters to monitor. jconsole can be used for this, however if you’re using a host on AWS, or in a bandwidth-limited environment, you might find…

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Liveblogging: Indexing in Cassandra by Ed Anuff

Indexing in Cassandra First, a brief history: Cassandra 0.6 – No built-in secondary – all indexes were custom-built like using supercolumn Cassandra 0.7 – new users flocked to the built-in secondary indexes pros – easy to use out of the…

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Getting data out of JMX and into Cacti

JMX, if you don’t know, is one of the things that makes Java really great. It allows you to write your Java app and instrument it as if instrumentation was free. It’s not free, of course, but it’s so low…

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Using SSH Proxying with Jconsole to remote Cassandra instances

This guide leans heavily on the work of http://simplygenius.com/2010/08/jconsole-via-socks-ssh-tunnel.html — what I’ve done is collect his work into something a little more manageable for our environment. Prerequisites This guide assumes a few things are set up: That you’ve got ssh…

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Cassandra RandomPartitioner Tokenizing

So I’m creating a new cluster, and after setting up I needed to get my tokens.  As we’re told in http://wiki.apache.org/cassandra/Operations: Token selection: Using a strong hash function means RandomPartitioner keys will, on average, be evenly spread across the Token…

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Building Cassandra-Cacti-M6 on Centos 5.5

Turns out this is hard to do.    I’m writing this here for my benefit, and everyone else’s, too.  I’ve got a client using Cassandra, and of course you monitor that stuff.  So I figure that using the cassandra-cacti-m6 stuff is…

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