[jira] [Resolved] (SPARK-32716) Add function mapPartitionsWithInputSplitAndIndex to NewHadoopRDD

["Hyukjin Kwon (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-32716?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-32716.
----------------------------------
    Resolution: Won't Fix

> Add function mapPartitionsWithInputSplitAndIndex to NewHadoopRDD
> ----------------------------------------------------------------
>
>                 Key: SPARK-32716
>                 URL: https://issues.apache.org/jira/browse/SPARK-32716
>             Project: Spark
>          Issue Type: New Feature
>          Components: Spark Core
>    Affects Versions: 3.0.0
>            Reporter: Patrick Grandjean
>            Priority: Major
>
> This is a proposal to add the following function to NewHadoopRDD:
> {code:java}
> def mapPartitionsWithInputSplitAndIndex[U: ClassTag](
>     f: (InputSplit, Int, Iterator[(K, V)]) => Iterator[U],
>     preservesPartitioning: Boolean = false
> ): RDD[U]
> {code}
> This new function would provide the input split with its partition index.
> Having the partition index may be useful when trying to determine the mapping between part-XXXXX files and input splits.



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