[jira] [Assigned] (SPARK-32532) Improve ORC read/write performance on nested structs and array of structs

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

     [ https://issues.apache.org/jira/browse/SPARK-32532?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-32532:
------------------------------------

    Assignee: Apache Spark

> Improve ORC read/write performance on nested structs and array of structs
> -------------------------------------------------------------------------
>
>                 Key: SPARK-32532
>                 URL: https://issues.apache.org/jira/browse/SPARK-32532
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Muhammad Samir Khan
>            Assignee: Apache Spark
>            Priority: Major
>
> Have some improvements for ORC file format to reduce time taken when reading/writing nested/array'd structs. Using benchmarks in SPARK-32531 was able to improve performance on branch-3.0 as follows (measurements in seconds):
> Read:
>  Nested Structs: 184 -> 44
>  Array of Struct: 66 -> 15
> Write
>  Nested Structs: 543 -> 39
>  Array of Struct: 330 -> 37
> Will be putting up the PR soon with the changes.



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