Joel Van Veluwen created ZEPPELIN-681:
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Summary: Time elapsed per cell error
Key: ZEPPELIN-681
URL: https://issues.apache.org/jira/browse/ZEPPELIN-681
Project: Zeppelin
Issue Type: Bug
Components: GUI
Affects Versions: 0.5.6, 0.5.5
Environment: Spark 1.6 (and Spark 1.5.2)
Reporter: Joel Van Veluwen
Hey Guys,
I’ve noticed that the time elapsed section at the end of a cell, the Took x
seconds doesn’t always reconcile with the time elapsed in the application
master of Spark – particularly when two cells are executed in sequence.
I’m using Zeppelin 0.55 with Spark 1.5.2 and these errors are appearing on the
Spark interpreter.
It appears that the latest cell is bringing the sum of the previous cell into
the execution time. An example is below where Cell 1 reconciles with Spark but
the following cells add the previous time elapsed to their time taken.
!http://oi63.tinypic.com/1547n6a.jpg!
!http://oi65.tinypic.com/nd54r9.jpg!
!http://oi65.tinypic.com/9idyjb.jpg!
Clearly Zeppelin needs to communicate with Spark and render the result - but an
empty cell shouldn't take the same amount of time as the previous cell. It
looks like there is a bug.
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