Support Questions
Find answers, ask questions, and share your expertise
Announcements
Alert: Welcome to the Unified Cloudera Community. Former HCC members be sure to read and learn how to activate your account here.

YARN Node Manager cant connect to Resource Manager

Highlighted

YARN Node Manager cant connect to Resource Manager

Explorer

Hello,

 

The nodemanager is going in a bad state and this is the message. If I try to restart YARN, the status is green for a while before it gets red again (I can run one or two pig scripts before they stop running). I have checked the logs and there is no error of any kind. Where can I start debugging this? Can Pig cause YARN to go into bad health?

 

Thanks

Ashish

2 REPLIES 2
Highlighted

Re: YARN Node Manager cant connect to Resource Manager

Contributor

I don't believe that a user job can cause YARN to fail. When the status is in that bad state, can you run the Host Inspector in CM? Also, I find it very surprising that there isn't any error in the logs. Did you check both the RM log and the NM log?

Highlighted

Re: YARN Node Manager cant connect to Resource Manager

Explorer

Yes I did check both the RM and NM logs. The issue turned out to be the pig version - things worked when I went from Pig 0.12 to trunk, the nodemanager continues to be in the bad state. But things are working.

Don't have an account?
Coming from Hortonworks? Activate your account here