问题
I have a dse graph in validation/prod environement. The problem occurs when I try to launch a DSEGraphFrame query using Spark in Scala.
val graph = spark.dseGraph("my_graph")
generates the following exception:
Exception in thread "main" com.datastax.driver.core.exceptions.InvalidQueryException: The method DseGraphRpc.getSchemaBlob does not exist. Make sure that the required component for that method is active/enabled at com.datastax.driver.core.exceptions.InvalidQueryException.copy(InvalidQueryException.java:40) at com.datastax.driver.core.DriverThrowables.propagateCause(DriverThrowables.java:26) at com.datastax.driver.core.DefaultResultSetFuture.getUninterruptibly(DefaultResultSetFuture.java:284) at com.datastax.driver.core.AbstractSession.execute(AbstractSession.java:49) 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 com.datastax.spark.connector.cql.SessionProxy.invoke(SessionProxy.scala:37) at com.sun.proxy.$Proxy27.execute(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.datastax.spark.connector.cql.SessionProxy.invoke(SessionProxy.scala:37) at com.sun.proxy.$Proxy28.execute(Unknown Source) at com.datastax.bdp.util.rpc.RpcUtil.callInternal(RpcUtil.java:57) at com.datastax.bdp.util.rpc.RpcUtil.call(RpcUtil.java:40) at com.datastax.bdp.graph.spark.DseGraphRpc.callGetSchema(DseGraphRpc.java:45) at com.datastax.bdp.graph.spark.graphframe.DseGraphFrame$$anonfun$getSchemaFromServer$1.apply(DseGraphFrame.scala:586) at com.datastax.bdp.graph.spark.graphframe.DseGraphFrame$$anonfun$getSchemaFromServer$1.apply(DseGraphFrame.scala:586) at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withSessionDo$1.apply(CassandraConnector.scala:115) at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withSessionDo$1.apply(CassandraConnector.scala:114) at com.datastax.spark.connector.cql.CassandraConnector.closeResourceAfterUse(CassandraConnector.scala:158) at com.datastax.spark.connector.cql.CassandraConnector.withSessionDo(CassandraConnector.scala:114) at com.datastax.bdp.graph.spark.graphframe.DseGraphFrame$.getSchemaFromServer(DseGraphFrame.scala:586) at com.datastax.bdp.graph.spark.graphframe.DseGraphFrameBuilder$.apply(DseGraphFrameBuilder.scala:257) at com.datastax.bdp.graph.spark.graphframe.SparkSessionFunctions.dseGraph(SparkSessionFunctions.scala:20)
What could I do to run DSEGraphFrame properly?
回答1:
The problem comes from a node in dse cluster wich the graph isn't activated
来源：https://stackoverflow.com/questions/54477706/error-when-launching-the-graph-dsegraphframe