July 2017
Intermediate to advanced
796 pages
18h 55m
English
Content preview from Scala and Spark for Big Data Analytics
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Jobs
Depending upon the SparkContext, the Jobs tab shows the status of all the Spark jobs in a Spark application. When you access the Jobs tab on the Spark UI using a web browser at http://localhost:4040 (for standalone mode), you should observe the following options:
- User: This shows the active user who has submitted the Spark job
- Total Uptime: This shows the total uptime for the jobs
- Scheduling Mode: In most cases, it is first-in-first-out (aka FIFO)
- Active Jobs: This shows the number of active jobs
- Completed Jobs: This shows the number of completed jobs
- Event Timeline: This shows the timeline of a job that has completed its execution
Internally, the Jobs tab is represented by the JobsTab class, which is a custom SparkUI tab with the ...
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