Kaya Kupferschmidt created SPARK-24742:
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Summary: 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
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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