What Should I Do if the Client Has No Response after a MapReduce Job is Submitted?
Question
What should I do if the client has no response for a long time after the MapReduce job is submitted to the Yarn server?
Answer
ResourceManager provides diagnosis information about key steps of MapReduce job execution on the web UI. For the MapReduce job that has been submitted to the Yarn server, you can obtain the current task status and the reason from the diagnosis information.
Procedures: On the management console of the public cloud, choose to enter the web UI. Click the submitted MapReduce job, and view diagnosis information. Take measures based on the diagnosis information.
View MapReduce logs to learn application running status, and adjust applications based on log information.
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