[jira] [Resolved] (SPARK-24742) Field Metadata raises NullPointerException in hashCode method

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-24742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-24742.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 2.4.0

Issue resolved by pull request 21722
[https://github.com/apache/spark/pull/21722]

> Field Metadata raises NullPointerException in hashCode method
> -------------------------------------------------------------
>
>                 Key: SPARK-24742
>                 URL: https://issues.apache.org/jira/browse/SPARK-24742
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.3.1
>            Reporter: Kaya Kupferschmidt
>            Assignee: Kaya Kupferschmidt
>            Priority: Minor
>             Fix For: 2.4.0
>
>
> The class org.apache.spark.sql.types.Metadata has a method *putNull* for storing null pointers as Metadata. Unfortunately the hashCode method throws a NullPointerException when there are null values in a Metadata object, rendering the *puNull* method useless.
> h2. How to Reproduce
> The following code will raise a NullPointerException
> {code}
> new MetadataBuilder().putNull("key").build().hashCode
> {code}



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