Details

Created: 24 May 2017

• Hadoop
• Hue
• MySQL
• SQLite
• bigdata
• Cloudera

When you move Hue database to another server or from sqlite to mysql and just want to start over, with a fresh empty DB, do as follows:

1. configure Hue to use the right database credentials, without starting it
2. on the host that Hue is configured to run on, do: 
   

   /opt/cloudera/parcels/CDH/lib/hue/build/env/bin/hue syncdb --noinput

   This will create all the tables and let Hue run.
3. start Hue and login

Details

Created: 18 May 2017

• scala
• sbt

build.sbt is the main file Sbt uses to understand how a project is organized and how to build it. There are several topics you are expected to address in this files. Lets see an example:

Details

Created: 18 April 2017

• Hadoop
• YARN

Provided that you have your application ID, getting its logs is as easy as:

$ yarn logs -applicationId <application_id_00398384848_9398>

Details

Created: 20 March 2017

• scala
• spark

This is another notebook, this time about SparkSQL. It is again not intended for public use, it's only my notebook. Period.