July 2017
Intermediate to advanced
796 pages
18h 55m
English
Content preview from Scala and Spark for Big Data Analytics
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Debugging Spark applications using logs
Seeing the information about all running Spark applications depends on which cluster manager you are using. You should follow these instructions while debugging your Spark application:
- Spark Standalone: Go to the Spark master UI at http://master:18080. The master and each worker show cluster and the related job statistics. In addition, a detailed log output for each job is also written to the working directory of each worker. We will discuss how to enable the logging manually using the log4j with Spark.
- YARN: If your cluster manager is YARN, and suppose that you are running your Spark jobs on the Cloudera (or any other YARN-based platform), then go to the YARN applications page in the Cloudera Manager ...
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