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From Hitesh Shah <>
Subject Re: get input size for each task
Date Mon, 07 Jul 2014 17:37:43 GMT
Correct. The hierarchy is dag -> vertex -> task -> task attempt ( each relationship
being a 1:N ).
Vertex defines a stage of common processing logic applied on a parallel data set. A task represents
processing of a subset of the data set.


On Jul 7, 2014, at 9:40 AM, Grandl Robert <> wrote:

> Another dumb question: A vertex can have multiple tasks(not task attempts), for different
input blocks, right ? So a vertex entity is kind of a stage abstraction, not a task abstraction,
right ?

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