Exception:

22/06/10 09:29:18 ERROR ScalaDriverLocal: User Code Stack Trace:
java.lang.ClassCastException: scala.Tuple8 cannot be cast to scala.Tuple7
at org.apache.spark.sql.cassandra.execution.CassandraDirectJoinStrategy.apply(CassandraDirectJoinStrategy.scala:27)
at org.apache.spark.sql.catalyst.planning.QueryPlanner.$anonfun$plan$2(QueryPlanner.scala:69)
at com.databricks.spark.util.FrameProfiler$.record(FrameProfiler.scala:80)
at org.apache.spark.sql.catalyst.planning.QueryPlanner.$anonfun$plan$1(QueryPlanner.scala:69)
at scala.collection.Iterator$$anon$11.nextCur(Iterator.scala:486)
at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:492)
at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491)
at org.apache.spark.sql.catalyst.planning.QueryPlanner.plan(QueryPlanner.scala:100)
at org.apache.spark.sql.execution.SparkStrategies.plan(SparkStrategies.scala:77)
at org.apache.spark.sql.catalyst.planning.QueryPlanner.$anonfun$plan$4(QueryPlanner.scala:85)
at scala.collection.TraversableOnce$folder$1.apply(TraversableOnce.scala:196)
at scala.collection.TraversableOnce$folder$1.apply(TraversableOnce.scala:194)
at scala.collection.Iterator.foreach(Iterator.scala:943)
at scala.collection.Iterator.foreach$(Iterator.scala:943)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1431)
at scala.collection.TraversableOnce.foldLeft(TraversableOnce.scala:199)
at scala.collection.TraversableOnce.foldLeft$(TraversableOnce.scala:192)
at scala.collection.AbstractIterator.foldLeft(Iterator.scala:1431)
at org.apache.spark.sql.catalyst.planning.QueryPlanner.$anonfun$plan$3(QueryPlanner.scala:82)
at scala.collection.Iterator$$anon$11.nextCur(Iterator.scala:486)
at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:492)
at org.apache.spark.sql.catalyst.planning.QueryPlanner.plan(QueryPlanner.scala:100)
at org.apache.spark.sql.execution.SparkStrategies.plan(SparkStrategies.scala:77)
at org.apache.spark.sql.execution.QueryExecution$.createSparkPlan(QueryExecution.scala:587)
at org.apache.spark.sql.execution.QueryExecution.$anonfun$sparkPlan$1(QueryExecution.scala:182)
at com.databricks.spark.util.FrameProfiler$.record(FrameProfiler.scala:80)
at org.apache.spark.sql.catalyst.QueryPlanningTracker.measurePhase(QueryPlanningTracker.scala:134)
at org.apache.spark.sql.execution.QueryExecution.$anonfun$executePhase$1(QueryExecution.scala:232)
at org.apache.spark.sql.SparkSession.withActive(SparkSession.scala:854)
at org.apache.spark.sql.execution.QueryExecution.executePhase(QueryExecution.scala:232)
at org.apache.spark.sql.execution.QueryExecution.sparkPlan$lzycompute(QueryExecution.scala:182)
at org.apache.spark.sql.execution.QueryExecution.sparkPlan(QueryExecution.scala:175)
at org.apache.spark.sql.execution.QueryExecution.$anonfun$executedPlan$1(QueryExecution.scala:194)
at org.apache.spark.sql.SparkSession.withActive(SparkSession.scala:854)
at org.apache.spark.sql.execution.QueryExecution.executedPlan$lzycompute(QueryExecution.scala:194)
at org.apache.spark.sql.execution.QueryExecution.executedPlan(QueryExecution.scala:189)
at org.apache.spark.sql.execution.QueryExecution.$anonfun$simpleString$2(QueryExecution.scala:271)
at org.apache.spark.sql.catalyst.plans.QueryPlan$.append(QueryPlan.scala:688)
at org.apache.spark.sql.execution.QueryExecution.simpleString(QueryExecution.scala:271)
at org.apache.spark.sql.execution.QueryExecution.org$apache$spark$sql$execution$QueryExecution$$explainString(QueryExecution.scala:314)
at org.apache.spark.sql.execution.QueryExecution.explainStringLocal(QueryExecution.scala:292)
at org.apache.spark.sql.execution.QueryExecution.explainString(QueryExecution.scala:285)
at org.apache.spark.sql.Dataset.$anonfun$explain$1(Dataset.scala:549)
at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
at org.apache.spark.sql.SparkSession.withActive(SparkSession.scala:854)
at org.apache.spark.sql.Dataset.explain(Dataset.scala:549)
at org.apache.spark.sql.Dataset.explain(Dataset.scala:573)
at $line991ddb1aa4794457a36407206ebc77aa25.$read$$iw$$iw$$iw$$iw$$iw$$iw.<init>(command-4289521517231852:48)
at $line991ddb1aa4794457a36407206ebc77aa25.$read$$iw$$iw$$iw$$iw$$iw.<init>(command-4289521517231852:102)
at $line991ddb1aa4794457a36407206ebc77aa25.$read$$iw$$iw$$iw$$iw.<init>(command-4289521517231852:104)
at $line991ddb1aa4794457a36407206ebc77aa25.$read$$iw$$iw$$iw.<init>(command-4289521517231852:106)
at $line991ddb1aa4794457a36407206ebc77aa25.$read$$iw$$iw.<init>(command-4289521517231852:108)
at $line991ddb1aa4794457a36407206ebc77aa25.$read$$iw.<init>(command-4289521517231852:110)
at $line991ddb1aa4794457a36407206ebc77aa25.$read.<init>(command-4289521517231852:112)
at $line991ddb1aa4794457a36407206ebc77aa25.$read$.<init>(command-4289521517231852:116)
at $line991ddb1aa4794457a36407206ebc77aa25.$read$.<clinit>(command-4289521517231852)
at $line991ddb1aa4794457a36407206ebc77aa25.$eval$.$print$lzycompute(<notebook>:7)
at $line991ddb1aa4794457a36407206ebc77aa25.$eval$.$print(<notebook>:6)
at $line991ddb1aa4794457a36407206ebc77aa25.$eval.$print(<notebook>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:747)
at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:1020)
at scala.tools.nsc.interpreter.IMain.$anonfun$interpret$1(IMain.scala:568)
at scala.reflect.internal.util.ScalaClassLoader.asContext(ScalaClassLoader.scala:36)
at scala.reflect.internal.util.ScalaClassLoader.asContext$(ScalaClassLoader.scala:116)
at scala.reflect.internal.util.AbstractFileClassLoader.asContext(AbstractFileClassLoader.scala:41)
at scala.tools.nsc.interpreter.IMain.loadAndRunReq$1(IMain.scala:567)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:594)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:564)
at com.databricks.backend.daemon.driver.DriverILoop.execute(DriverILoop.scala:219)
at com.databricks.backend.daemon.driver.ScalaDriverLocal.$anonfun$repl$1(ScalaDriverLocal.scala:235)
at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
at com.databricks.backend.daemon.driver.DriverLocal$TrapExitInternal$.trapExit(DriverLocal.scala:914)
at com.databricks.backend.daemon.driver.DriverLocal$TrapExit$.apply(DriverLocal.scala:867)
at com.databricks.backend.daemon.driver.ScalaDriverLocal.repl(ScalaDriverLocal.scala:235)
at com.databricks.backend.daemon.driver.DriverLocal.$anonfun$execute$11(DriverLocal.scala:552)
at com.databricks.logging.UsageLogging.$anonfun$withAttributionContext$1(UsageLogging.scala:215)
at scala.util.DynamicVariable.withValue(DynamicVariable.scala:62)
at com.databricks.logging.UsageLogging.withAttributionContext(UsageLogging.scala:213)
at com.databricks.logging.UsageLogging.withAttributionContext$(UsageLogging.scala:210)
at com.databricks.backend.daemon.driver.DriverLocal.withAttributionContext(DriverLocal.scala:50)
at com.databricks.logging.UsageLogging.withAttributionTags(UsageLogging.scala:251)
at com.databricks.logging.UsageLogging.withAttributionTags$(UsageLogging.scala:243)
at com.databricks.backend.daemon.driver.DriverLocal.withAttributionTags(DriverLocal.scala:50)
at com.databricks.backend.daemon.driver.DriverLocal.execute(DriverLocal.scala:529)
at com.databricks.backend.daemon.driver.DriverWrapper.$anonfun$tryExecutingCommand$1(DriverWrapper.scala:693)
at scala.util.Try$.apply(Try.scala:213)
at com.databricks.backend.daemon.driver.DriverWrapper.tryExecutingCommand(DriverWrapper.scala:685)
at com.databricks.backend.daemon.driver.DriverWrapper.getCommandOutputAndError(DriverWrapper.scala:526)
at com.databricks.backend.daemon.driver.DriverWrapper.executeCommand(DriverWrapper.scala:638)
at com.databricks.backend.daemon.driver.DriverWrapper.runInnerLoop(DriverWrapper.scala:431)
at com.databricks.backend.daemon.driver.DriverWrapper.runInner(DriverWrapper.scala:374)
at com.databricks.backend.daemon.driver.DriverWrapper.run(DriverWrapper.scala:225)
at java.lang.Thread.run(Thread.java:748)