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Posted to issues@spark.apache.org by "Liang-Chi Hsieh (JIRA)" <ji...@apache.org> on 2019/03/22 13:58:00 UTC

[jira] [Updated] (SPARK-27241) Add map_keys and map_values support to SelectedField in nested schema pruning

     [ https://issues.apache.org/jira/browse/SPARK-27241?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Liang-Chi Hsieh updated SPARK-27241:
------------------------------------
    Summary: Add map_keys and map_values support to SelectedField in nested schema pruning  (was: Add map keys support to SelectedField in nested schema pruning)

> Add map_keys and map_values support to SelectedField in nested schema pruning
> -----------------------------------------------------------------------------
>
>                 Key: SPARK-27241
>                 URL: https://issues.apache.org/jira/browse/SPARK-27241
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Liang-Chi Hsieh
>            Priority: Major
>
> {{SelectedField}} in nested schema pruning doesn't support map keys now. When map key is complex struct, we should be able to prune unnecessary fields from keys.



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