py4j.protocol.Py4JJavaError: An error occurred while calling o66.save. : java.lang.RuntimeException: java.lang.IllegalArgumentException: Unsupported JDBC protocol: 'null' at com.hortonworks.spark.sql.hive.llap.HiveWarehouseDataSourceWriter.createInternalRowWriterFactory(HiveWarehouseDataSourceWriter.java:102) at org.apache.spark.sql.execution.datasources.v2.WriteToDataSourceV2Exec.doExecute(WriteToDataSourceV2.scala:55) at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:131) at org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:127) at org.apache.spark.sql.execution.SparkPlan$$anonfun$executeQuery$1.apply(SparkPlan.scala:155) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) at org.apache.spark.sql.execution.SparkPlan.executeQuery(SparkPlan.scala:152) at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:127) at org.apache.spark.sql.execution.QueryExecution.toRdd$lzycompute(QueryExecution.scala:80) at org.apache.spark.sql.execution.QueryExecution.toRdd(QueryExecution.scala:80) at org.apache.spark.sql.DataFrameWriter$$anonfun$runCommand$1.apply(DataFrameWriter.scala:656) at org.apache.spark.sql.DataFrameWriter$$anonfun$runCommand$1.apply(DataFrameWriter.scala:656) at org.apache.spark.sql.execution.SQLExecution$.withNewExecutionId(SQLExecution.scala:77) at org.apache.spark.sql.DataFrameWriter.runCommand(DataFrameWriter.scala:656) at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:256) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244) at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357) at py4j.Gateway.invoke(Gateway.java:282) at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132) at py4j.commands.CallCommand.execute(CallCommand.java:79) at py4j.GatewayConnection.run(GatewayConnection.java:238) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.IllegalArgumentException: Unsupported JDBC protocol: 'null' at com.hortonworks.spark.sql.hive.llap.JDBCWrapper$$anonfun$getDriverClass$2.apply(HS2JDBCWrapper.scala:89) at com.hortonworks.spark.sql.hive.llap.JDBCWrapper$$anonfun$getDriverClass$2.apply(HS2JDBCWrapper.scala:75) at scala.Option.getOrElse(Option.scala:121) at com.hortonworks.spark.sql.hive.llap.JDBCWrapper.getDriverClass(HS2JDBCWrapper.scala:74) at com.hortonworks.spark.sql.hive.llap.JDBCWrapper.getConnector(HS2JDBCWrapper.scala:307) at com.hortonworks.spark.sql.hive.llap.DefaultJDBCWrapper.getConnector(HS2JDBCWrapper.scala) at com.hortonworks.spark.sql.hive.llap.HiveWarehouseDataSourceWriter.getConnection(HiveWarehouseDataSourceWriter.java:176) at com.hortonworks.spark.sql.hive.llap.HiveWarehouseDataSourceWriter.createInternalRowWriterFactory(HiveWarehouseDataSourceWriter.java:95) ... 25 more       My Pyspark statement creating error. df.write.format("com.hortonworks.spark.sql.hive.llap.HiveWarehouseConnector").option("table","table_name").save()   I have properly supplied mysql-java.jar, hive-warehouse-connector-assembly-1.0.0.3.1.0.0-78.jar ,pyspark_hwc-1.0.0.3.1.0.0-78.zip   Can someone look into it? ... View more