title: Command Strategy Class Not found in Spark 1.3
body: <p>I am using spark 1.3 and am able to create spark context . when i try to access a Cassandra DB using CassandraSQL context. I get the below error. </p>
  
  <p>Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/spark/sql/execution/SparkStrategies$CommandStrategy
      at org.apache.spark.sql.cassandra.CassandraSQLContext$$anon$1.(CassandraSQLContext.scala:67)
      at org.apache.spark.sql.cassandra.CassandraSQLContext.(CassandraSQLContext.scala:64)
      at SparkSample$.main(SparkSample.scala:28)
      at SparkSample.main(SparkSample.scala)</p>
  
  <p>I use the spark-cassandra connector from Datastax. Also that I am not able to see any documentation related to SQL Execution
  <a href="https://spark.apache.org/docs/1.2.0/api/java/index.html?org.apache.spark.sql.execution" rel="nofollow">https://spark.apache.org/docs/1.2.0/api/java/index.html?org.apache.spark.sql.execution</a> in spark 1.3 version.  Any thoughts ?</p>