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Dr. Elephant

This repository adds support for Spark 3.1 for Dr. Elephant, updates the play framework to 2.6.19.

It works well on Spark applications with Scala 2.12 and Spark 3.1.1, but isn't fully tested on Mapreduce applications.

Detailed usage of Dr. Elephant: https://github.com/linkedin/dr-elephant

Setup

Basically, you should follow the instructions here: Click here

Some extra steps:

  1. It uses sbt instead of play or activator command, so you must have sbt installed before setup.

  2. After successfully compiling the Dr. Elephant, you should edit the file bin/dr-elephant in the distribution, replace declare -a app_mainclass=(play.core.server.ProdServerStart) with declare -a app_mainclass=(startup.ProdServerStart) (That's a naive solution to remove GlobalSettings. The dependency injection and eager binding don't work well. If there is any better solution, please open a pull request)