Github user dongjoon-hyun commented on the issue: https://github.com/apache/spark/pull/15168 Hi, @gatorsmile . It's the same behavior with Apache Spark 1.6.2. This PR doesn't make any regression for Datasource tables. Actually, the error you mentioned is raised by `HiveMetastore` since it's not Hive compatible table as you see the WARNING below. ```scala scala> sc.version scala> sqlContext.range(1).select('id as 'a, 'id as 'b, 'id as 'c, 'id as 'd).write.partitionBy("d").saveAsTable("t1") 16/09/24 08:24:51 WARN HiveContext$$anon$2: Persisting partitioned data source relation `t1` into Hive metastore in Spark SQL specific format, which is NOT compatible with Hive. Input path(s): file:/user/hive/warehouse/t1 scala> sql("DESC FORMATTED t1 partition (d=1)").show(100, false) 16/09/24 08:25:06 ERROR DDLTask: java.lang.RuntimeException: cannot find field null from [0:col] at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.getStandardStructFieldRef(ObjectInspectorUtils.java:416) ```
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