[jira] [Assigned] (SPARK-21415) Triage scapegoat warnings, part 1

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-21415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-21415:
------------------------------------

    Assignee: Apache Spark  (was: Sean Owen)

> Triage scapegoat warnings, part 1
> ---------------------------------
>
>                 Key: SPARK-21415
>                 URL: https://issues.apache.org/jira/browse/SPARK-21415
>             Project: Spark
>          Issue Type: Improvement
>          Components: GraphX, ML, Spark Core, SQL, Structured Streaming
>    Affects Versions: 2.3.0
>            Reporter: Sean Owen
>            Assignee: Apache Spark
>            Priority: Minor
>
> Following the results of the scapegoat plugin at https://docs.google.com/spreadsheets/d/1z7xNMjx7VCJLCiHOHhTth7Hh4R0F6LwcGjEwCDzrCiM/edit#gid=767668040 and some initial triage, I'd like to address all of the valid instances of some classes of warning:
> - BigDecimal double constructor
> - Catching NPE
> - Finalizer without super
> - List.size is O(n)
> - Prefer Seq.empty
> - Prefer Set.empty
> - reverse.map instead of reverseMap
> - Type shadowing
> - Unnecessary if condition.
> - Use .log1p
> - Var could be val



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