When I look at a specific event timeline for a specific stage in a browser-based user interface, I constantly notice that the Executor Computing Time run time displayed on the graph never exceeds a certain length. In the attached image, you can see that several tasks take different time intervals, but longer ones have the same green bar “length” representing Time Computing Time. The rest of the task length is occupied by an “empty” blue bar, which does not indicate that something is happening. The values specified for Executor Compile Time in the tables below are much longer and, apparently, they need to deal with the entire empty part of the panel.
Please note that this blue part of the panel does not get the result, it is just "empty". This is checked in table time values.
Even when I change the time scale, these green bars remain the same length, so I assume that this is a mistake in the way the artist compilation time is displayed in the user interface.
Is this a known issue, or is there another explanation?
I am using Chrome on Windows using Spark 2.0 on a remote server.
IMAGE: task execution time and empty space
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