Fix: HDP “Unauthorized connection for super-user: oozie from IP 127.0.0.1”

Recently have been playing with HortonWorks HDP 2.2. Was starting to configure some oozie workflows and when submitting the job the first step’s Hive script failed with this error and stack. To fix this, SSH into your HDP instance VM and edit: /etc/hadoop/conf/core-site.xml and change the following config to add “localhost”. Save and restart the relevant services […]

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Give R a shot

Just went through this little primer on the R language for data analysis. Pretty good and worth 30 minutes of your time. Check it out. http://tryr.codeschool.com/

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Astyanax -> Cassandra PoolTimeoutException during Authentication failure?

Recently I was working on implementing a custom IAuthenticator and IAuthority for Cassandra 1.1.1 because really there is not much/any security out of the box. For those of you familiar with Cassandra, its distribution used to include a simple property file based implementation of the IAuthentication and IAuthority that you could reference in your cassandra.yaml file […]

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