[GitHub] drill issue #839: DRILL-5516: Use max allowed allocated memory when defining...

[paul-rogers <gi...@git.apache.org>]

Github user paul-rogers commented on the issue:

    https://github.com/apache/drill/pull/839
  
    The right approach is not to simply allow HBase to use more memory. The right approach is to limit memory.
    
    Fortunately, another project is underway to do just that. Let's collaborate. In the next week or so I'll do a PR for the framework to limit batch sizes in readers, along with an implementation for the "compliant" text readers.
    
    Maybe you can use that framework to retrofit the HBase reader to also limit it's batch size. Basically, we limit the length of the longest vector to 16 MB.
    
    The present patch, using unlimited memory, has all kinds of other problems -- the very problems we are trying to solve, so it is not helpful to move forward in one area, backward in another.


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