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Published 20 hours ago • verified publisher icon linkedin

Error couldn't invoke class com.Linkedin.dr.elephant.tez.fetchers.TezFetcher

Open pithanimohan opened this issue 6 years ago • 5 comments

Hello,

I'm trying to install and run dr elephant. I have successfully compiled and got the zip file. However, when I run the start.sh the message shows Dr.elephant started but does nothing.

I have attached the error screenshot of dr.log.

My Dr Elephant web UI doesn't open. nothing shows up.

Please help me..

Thanks Mohan.P error2

pithanimohan avatar Jul 23 '18 16:07 pithanimohan

Comment Related lines

daming000 avatar Jul 25 '18 02:07 daming000

Hi, @daming000 @akshayrai @nntnag17

May I know what information you need?

I'm new to Bigdata Ecosystem. I was given this new assignment where I would have to evaluate Dr Elephant and come up with a report. I'm trying to run this on VM which has hadoop. However, I'm stuck with this error.

It would also help if you can provide the hadoop conf mandatory attributes which are required to run dr.E

I have attached all the log files I have with me.

dr.log application.log dr_elephant.log

I would highly appreciate any help which will help me resolve this issue.

Thanks and regards Mohan.P

pithanimohan avatar Jul 25 '18 23:07 pithanimohan

The same bugs occur for me. Commenting related lines in FetcherConf.xml helps resolving that. However, can Dr. E fetch TEZ metrics after commenting the only TEZ fetcher?

Finally I found it is Tez configuration which leads failure for me. Adding timeline-server service relevant parameters fixed the bug . Refer to tez-ui for detailed configuration. Hope that helps.

Windyhe avatar Aug 04 '18 01:08 Windyhe

I looked at the logs. Looks like this URL is not accessible to Dr. Elephant. Can you verify access to time line server on your cluster please. http://<yarn.timeline-service.webapp.address>/ws/v1/timeline/

chrevanthreddy avatar Aug 07 '18 21:08 chrevanthreddy

Hi @akshayrai @nntnag17

I would greatly appreciate your assistance with starting dr-elephant properly.

I had the same TezFetcher related error specified in dr.log file above, so I commented out the TEZ fetcher in /app-conf/FetcherConf.xml file and now Dr. Elephant starts. However, when I open dr-elephant in WEB browser, I see that no analysis has been done: 27698422-b8dec836-5d14-11e7-8998-2c9795788599

In addition, dr_elephant.log file is not created in /logs/elephant/ directory. Please advise how to make dr-elephant present analysis. Thanks.

nutscrack avatar Feb 11 '19 11:02 nutscrack