spark.createDataFrame raises an exception in Spark 2.0 tests on Windows

spark.createDataFrame raises an exception in Spark 2.0 tests on Windows

For example, LogisticRegressionSuite fails at Line 46:
Exception encountered when invoking run on a nested suite - java.net.URISyntaxException: Relative path in absolute URI: file:C:/dev/spark/external/flume-assembly/spark-warehouse
java.lang.IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI: file:C:/dev/spark/external/flume-assembly/spark-warehouse
at org.apache.hadoop.fs.Path.initialize(Path.java:206)
at org.apache.hadoop.fs.Path.<init>(Path.java:172)
at org.apache.spark.sql.catalyst.catalog.SessionCatalog.makeQualifiedPath(SessionCatalog.scala:109)

Another example, DataFrameSuite raises:
java.net.URISyntaxException: Relative path in absolute URI: file:C:/dev/spark/external/flume-assembly/spark-warehouse
java.lang.IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI: file:C:/dev/spark/external/flume-assembly/spark-warehouse
at org.apache.hadoop.fs.Path.initialize(Path.java:206)
at org.apache.hadoop.fs.Path.<init>(Path.java:172)