exception when running tables.genData()

[alphalzh]

Hi,
Thanks for your devotion in developing this tool first.
My environment: Cloudera CDH 5.6.0+spark 1.5.0
I encountered this error when I tried to generate data using tables.genData():
scala> tables.genData("/hdfs2/ds", "text" ,true ,true,true,true,true) java.lang.NoClassDefFoundError: org/apache/spark/sql/Dataset at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2570) at java.lang.Class.getDeclaredMethod(Class.java:2002) at java.io.ObjectStreamClass.getPrivateMethod(ObjectStreamClass.java:1431) ......
previously I was just following the README.md, here's what I've done:
import com.databricks.spark.sql.perf.tpcds.Tables import com.databricks.spark.sql.perf.tpcds.Tables scala> val tables = new Tables(sqlContext,"/root/tpc-ds/tools" , 50) tables: com.databricks.spark.sql.perf.tpcds.Tables = com.databricks.spark.sql.perf.tpcds.Tables@194765c4
I would like to know what is possibly going wrong here? Is it because that I use cloudera distribution of spark or I was using version 1.5.0 which is not supported?
Thanks for your help in advance.

[alphalzh]

ok, so I found this: apache/spark#11443
It seems that spark has migrated the old DataFrame class to Dataset. Might due to my spark version.