apache/spark — pull request #2899 by yhuai (2014-10-23 00:36:11+00:00)
Title: [SPARK-4052][SQL] Use scala.collection.Map for pattern matching instead of using Predef.Map (it is scala.collection.immutable.Map)

Please check https://issues.apache.org/jira/browse/SPARK-4052 for cases triggering this bug.