Running JAR file on Amazon EMR created using Hadoop 2 7 5

Question

 Amazon EMR has changed it's hadoop version from 2.7.3 to 2.8.3 and there is no option for 2.7.5. the fact that, I am using custom jar which was created using hadoop 2.7.5. Is there any way to run that JAR on Amazon EMR? The cluster  terminates with error each time I  try to run that jar using existing EMR version (either with hadoop 2.7.3 or 2.8.3) which is logical.

Answer 1

Amazon keeps all its EMR versions intact. All you need to do while lauching a EMR job is specify the release lable. E.g. for 2.7.3, I use emr-5.11.0 . Here is detailed info :

https://docs.aws.amazon.com/emr/latest/ReleaseGuide/images/emr-releases-5x.png

Answer 2

I suggest you recompile the code or downgrade back to 2.7.3, which should be able to run most 2.7.5 code