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From gdfm <...@git.apache.org>
Subject [GitHub] incubator-samoa pull request: SAMOA-16: Add an adapter for Apache ...
Date Wed, 13 May 2015 10:35:35 GMT
Github user gdfm commented on the pull request:

    https://github.com/apache/incubator-samoa/pull/11#issuecomment-101618723
  
    Indeed, I see what you mean. Given that the feedback loop in Flink is faster, the number
of attempts to split should increase.
    This is expected, but the number of such attempts is upper bounded by the ones tried on
the Local engine, where there is no delay between request of the split criterion and response
by the local statistics.
    
    We already have some flow control to regulate the rate of ingestion in PrequentialEvaluation.
I'll play a bit with it to see what happens.
    When you put the 2 seconds delay in the Flink Processors, what happens (I guess) is that
the whole data streams through a very rough, sub-optimal version of the tree. So it's very
fast, but the precision drops considerably because of the artificial limit on the number of
split attempts.


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