[jira] [Created] (SPARK-18466) Missing withFilter method causes warnings when using for comprehensions

["Richard W. Eggert II (JIRA)" <ji...@apache.org>]

Richard W. Eggert II created SPARK-18466:
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             Summary: Missing withFilter method causes warnings when using for comprehensions
                 Key: SPARK-18466
                 URL: https://issues.apache.org/jira/browse/SPARK-18466
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 2.0.2, 2.0.1, 2.0.0, 1.6.3, 1.6.2, 1.6.1, 1.6.0, 1.5.2, 1.5.1, 1.5.0, 1.4.1, 1.4.0
            Reporter: Richard W. Eggert II
            Priority: Minor


The fact that the RDD class has a `filter` method but not a `withFilter` method results in compiler warnings when using RDDs in `for` comprehensions. As of Scala 2.12, falling back to use of `filter` is no longer supported, so `for` comprehensions that use filters will no longer compile. Semantically, the only difference between `withFilter` and `filter` is that `withFilter` is lazy, and since RDDs are lazy by nature, one can simply be aliased to the other.



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