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

["Dongjoon Hyun (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-18466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun updated SPARK-18466:
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    Summary: Missing withFilter method causes errors when using for comprehensions  (was: Missing withFilter method causes warnings when using for comprehensions)

> Missing withFilter method causes errors when using for comprehensions
> ---------------------------------------------------------------------
>
>                 Key: SPARK-18466
>                 URL: https://issues.apache.org/jira/browse/SPARK-18466
>             Project: Spark
>          Issue Type: Sub-task
>          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, 2.3.0, 2.4.0
>            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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