[SPARK-26198] Metadata serialize null values throw NPE

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 2.3.3, 2.4.1, 3.0.0
• Component/s: SQL
• Assignee: Yuming Wang
• Reporter: Yuming Wang
• Created: 28/Nov/18 12:21
• Updated: 03/Dec/18 05:44
• Resolved: 02/Dec/18 14:52

Description

How to reproduce this issue:

scala> val meta = new org.apache.spark.sql.types.MetadataBuilder().putNull("key").build().json
java.lang.NullPointerException
  at org.apache.spark.sql.types.Metadata$.org$apache$spark$sql$types$Metadata$$toJsonValue(Metadata.scala:196)
  at org.apache.spark.sql.types.Metadata$$anonfun$1.apply(Metadata.scala:180)

Issue Links

• links to: [Github] Pull Request #23164 (wangyum)