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Spark - java.lang.AssertionError: assertion failed

By Dinesh

 Spark SQL fails to read data from a ORC hive table that has a new column added to it. Giving Exception - 

java.lang.AssertionError: assertion failed
	at scala.Predef$.assert(Predef.scala:165)
	at org.apache.spark.sql.execution.datasources.LogicalRelation$$anonfun$1.apply(LogicalRelation.scala:39)
	at org.apache.spark.sql.execution.datasources.LogicalRelation$$anonfun$1.apply(LogicalRelation.scala:38)
	at scala.Option.map(Option.scala:145)


This happens when following property is set - spark.sql.hive.convertMetastoreOrc=true

Solution - Comment out property if being set explicitly or set it to false. Refer https://issues.apache.org/jira/browse/SPARK-18355

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