Ben Chuanlong Du's Blog

It is never too late to learn.

Use Hive in Zeppelin

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Configuration

It seems that you have set a queue using the following code even if you have already set a queue in properties.

%hive-interpreter

set mapred.job.queue.name = your_queue …

Set Up External Dependencies in Zeppelin

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

http://zeppelin.apache.org/docs/0.8.0-SNAPSHOT/index.html

  1. %spark.dep seems troublesome. What if I set interpreter dependency directly? And can I do it for a single notebook? How …

sbt Plugins for Deployment

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

  1. sbt Assembly is recommended, generally speaking.

sbt-assembly

sbt-assembly creates a fat JAR, i.e., a single JAR file containing all class files from your code and libraries. By evolution, it also …

Null, None and Alike in Scala

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Nil represents an emptry List of anything of zero length. It is not that it refers to nothing but it refers to List which has no contents. In other words, Nil …