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This article mainly explains the "hadoop how to view the error log", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "hadoop how to view the error log" bar!

1. Query first, showing parameters, number of tasks, and task list, Application-Id, Application-Name, Application-Type, User, Queue, State, Final-State, Progress, Tracking-URL

Yarn application-list

2. Kill task

Yarn application-kill followed by Application-Id

View error log: yarn logs-applicationId ApplicationId | less | grep 'error'

Hadoop job-list

Hadoop job-kill

This order has been repealed and replaced with mapred job

Specific parameters can be checked by mapred job-h.

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