Shulou(Shulou.com)06/01 Report--

This article mainly shows you "what to do with the failure of jps commands in linux", which is easy to understand and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "what to do when jps commands fail in linux".

When upgrading hadoop from 1.x to hadoop2.x, I found a particularly troublesome problem: the Jps command failed!

The error is as follows:

Solution:

1. Violence method is not recommended because it will kill all ongoing processes.

Enter the tmp directory

Cd / tmp

Delete this directory

Folder named hsperfdata_ {username}

two。 After searching a lot of blog on the Internet, I found a big cow and got the solution (this method is recommended)

Check / tmp/hsperfdata_mapred, my folder here is / tmp/hsperfdata_hadoop

Remember that there was no permission problem before, and found that the permission was modified to 777. After revision back to 755, the problem was solved.

The above is all the contents of the article "what to do when the jps command fails in linux". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.