August 2015
Intermediate to advanced
278 pages
5h 54m
English
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YARN application logging
With the execution of an application over a YARN cluster, logs are generated for activities in the different components. These logs are broadly classified as follows:
Services logs
The ResourceManager and NodeManager daemons run 24 x 7 on the cluster nodes. These services keep a track of the activities on the cluster and coordinate with the other processes such as ApplicationMaster and container. The YARN service logs are created under the logs directory in the HADOOP_PREFIX directory. You can refer to the managing service logs section in the previous chapter.
Application logs
The ApplicationMaster, as well as the containers running in the cluster, generate the application logs. Logging allows the debugging and analyzing of ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.