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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2015/03/31 06:25:52 UTC

[jira] [Created] (SPARK-6624) Convert filters into CNF for data sources

Reynold Xin created SPARK-6624:
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             Summary: Convert filters into CNF for data sources
                 Key: SPARK-6624
                 URL: https://issues.apache.org/jira/browse/SPARK-6624
             Project: Spark
          Issue Type: Sub-task
            Reporter: Reynold Xin


We should turn filters into conjunctive normal form (CNF) before we pass them to data sources. Otherwise, filters are not very useful if there is a single filter with a bunch of ORs.

Note that we already try to do some of these in BooleanSimplification, but I think we should just formalize it to use CNF.



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