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https://issues.apache.org/jira/browse/SPARK-24742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-24742:
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Assignee: Apache Spark
> 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: Apache Spark
> Priority: Minor
>
> 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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