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https://issues.apache.org/jira/browse/SPARK-18466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Richard W. Eggert II updated SPARK-18466:
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    Description: 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.  (was: 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.)

> 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: 1.4.0, 1.4.1, 1.5.0, 1.5.1, 1.5.2, 1.6.0, 1.6.1, 1.6.2, 
> 1.6.3, 2.0.0, 2.0.1, 2.0.2
>            Reporter: Richard W. Eggert II
>            Priority: Minor
>              Labels: easyfix
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> 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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