Issue with JDBC query with new APOC library

[mkchikkala]

I'm trying to query MS SQL server with using apoc.load.jdbc, but getting an error everytime.
It's worked with earlier version apoc but new one 3.5.0.1 it's failing. how to resolve this.

Query Used : CALL apoc.load.jdbc('sql','select * from emp') YIELD dbRow return count(dbRow)
Issue : Neo.ClientError.Procedure.ProcedureCallFailed: Failed to invoke procedure apoc.load.jdbc: Caused by: java.lang.NullPointerException

Neo4j version 3.5.0 and apoc version 3.5.0.1
I can list all procedures using dbms.procedures() in Neo4j browser

[Benoit]

Hi,

Do you have more precise exception in the debug.log file to see where the procdure fails ?

Cheer.

[mkchikkala]

This is the error I see in debug.log

2018-12-12 11:30:29.546+0000 ERROR [o.n.k.i.p.Procedures] Cannot execute read result-set.
Error:
null
java.lang.NullPointerException
at apoc.load.Jdbc$ResultSetIterator.convert(Jdbc.java:234)
at apoc.load.Jdbc$ResultSetIterator.get(Jdbc.java:208)
at apoc.load.Jdbc$ResultSetIterator.(Jdbc.java:178)
at apoc.load.Jdbc.executeQuery(Jdbc.java:93)
at apoc.load.Jdbc.jdbcParams(Jdbc.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.neo4j.kernel.impl.proc.ReflectiveProcedureCompiler$ReflectiveProcedure.apply(ReflectiveProcedureCompiler.java:664)
at org.neo4j.kernel.impl.proc.ProcedureRegistry.callProcedure(ProcedureRegistry.java:219)
at org.neo4j.kernel.impl.proc.Procedures.callProcedure(Procedures.java:290)
at org.neo4j.kernel.impl.newapi.AllStoreHolder.callProcedure(AllStoreHolder.java:1035)
at org.neo4j.kernel.impl.newapi.AllStoreHolder.procedureCallRead(AllStoreHolder.java:800)
at org.neo4j.cypher.internal.runtime.interpreted.CallSupport$$anonfun$2.apply(CallSupport.scala:62)
at org.neo4j.cypher.internal.runtime.interpreted.CallSupport$$anonfun$2.apply(CallSupport.scala:62)
at org.neo4j.cypher.internal.runtime.interpreted.CallSupport$.callProcedure(CallSupport.scala:165)
at org.neo4j.cypher.internal.runtime.interpreted.CallSupport$.callReadOnlyProcedure(CallSupport.scala:64)
at org.neo4j.cypher.internal.runtime.interpreted.TransactionBoundQueryContext.callReadOnlyProcedure(TransactionBoundQueryContext.scala:974)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext$$anonfun$callReadOnlyProcedure$1.apply(ExceptionTranslatingQueryContext.scala:165)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext$$anonfun$callReadOnlyProcedure$1.apply(ExceptionTranslatingQueryContext.scala:165)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslationSupport$class.translateException(ExceptionTranslationSupport.scala:33)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext.translateException(ExceptionTranslatingQueryContext.scala:41)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslationSupport$class.translateIterator(ExceptionTranslationSupport.scala:47)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext.translateIterator(ExceptionTranslatingQueryContext.scala:41)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext.callReadOnlyProcedure(ExceptionTranslatingQueryContext.scala:165)
at org.neo4j.cypher.internal.runtime.interpreted.DelegatingQueryContext.callReadOnlyProcedure(DelegatingQueryContext.scala:249)
at org.neo4j.cypher.internal.runtime.LazyReadOnlyCallMode.callProcedure(ProcedureCallMode.scala:47)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.ProcedureCallPipe.org$neo4j$cypher$internal$runtime$interpreted$pipes$ProcedureCallPipe$$call(ProcedureCallPipe.scala:83)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.ProcedureCallPipe$$anon$$$$e6882d5096c8b8441ac36d3c0cc459e$$$$ateResultsByAppending$1.apply(ProcedureCallPipe.scala:67)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.ProcedureCallPipe$$anon$$$$e6882d5096c8b8441ac36d3c0cc459e$$$$ateResultsByAppending$1.apply(ProcedureCallPipe.scala:65)
at scala.collection.Iterator$$anon$12.nextCur(Iterator.scala:435)
at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:441)
at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:440)
at scala.collection.Iterator$class.foreach(Iterator.scala:891)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:59)
at scala.collection.immutable.VectorBuilder.$plus$plus$eq(Vector.scala:732)
at scala.collection.immutable.VectorBuilder.$plus$plus$eq(Vector.scala:708)
at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:310)
at scala.collection.AbstractIterator.to(Iterator.scala:1334)
at scala.collection.TraversableOnce$class.toIndexedSeq(TraversableOnce.scala:300)
at scala.collection.AbstractIterator.toIndexedSeq(Iterator.scala:1334)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.EagerPipe.internalCreateResults(EagerPipe.scala:29)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.PipeWithSource.createResults(Pipe.scala:76)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.PipeWithSource.createResults(Pipe.scala:72)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.PipeWithSource.createResults(Pipe.scala:72)
at org.neo4j.cypher.internal.compatibility.v3_5.runtime.executionplan.BaseExecutionResultBuilderFactory$BaseExecutionWorkflowBuilder.build(DefaultExecutionResultBuilderFactory.scala:61)
at org.neo4j.cypher.internal.compatibility.InterpretedRuntime$InterpretedExecutionPlan.run(InterpretedRuntime.scala:84)
at org.neo4j.cypher.internal.compatibility.CypherCurrentCompiler$CypherExecutableQuery$$anonfun$execute$1.apply(CypherCurrentCompiler.scala:199)
at org.neo4j.cypher.internal.compatibility.CypherCurrentCompiler$CypherExecutableQuery$$anonfun$execute$1.apply(CypherCurrentCompiler.scala:177)
at org.neo4j.cypher.exceptionHandler$runSafely$.apply(exceptionHandler.scala:89)
at org.neo4j.cypher.internal.compatibility.CypherCurrentCompiler$CypherExecutableQuery.execute(CypherCurrentCompiler.scala:218)
at org.neo4j.cypher.internal.ExecutionEngine.execute(ExecutionEngine.scala:101)
at org.neo4j.cypher.internal.javacompat.ExecutionEngine.executeQuery(ExecutionEngine.java:85)
at org.neo4j.bolt.v1.runtime.TransactionStateMachineV1SPI$BoltResultHandleV1.start(TransactionStateMachineV1SPI.java:189)
at org.neo4j.bolt.v1.runtime.TransactionStateMachine$State.startExecution(TransactionStateMachine.java:506)
at org.neo4j.bolt.v1.runtime.TransactionStateMachine$State$2.run(TransactionStateMachine.java:385)
at org.neo4j.bolt.v1.runtime.TransactionStateMachine.run(TransactionStateMachine.java:110)
at org.neo4j.bolt.v1.runtime.TransactionStateMachine.run(TransactionStateMachine.java:98)
at org.neo4j.bolt.v3.runtime.TransactionReadyState.processRunMessage(TransactionReadyState.java:82)
at org.neo4j.bolt.v3.runtime.TransactionReadyState.processUnsafe(TransactionReadyState.java:49)
at org.neo4j.bolt.v3.runtime.FailSafeBoltStateMachineState.process(FailSafeBoltStateMachineState.java:48)
at org.neo4j.bolt.v1.runtime.BoltStateMachineV1.nextState(BoltStateMachineV1.java:144)
at org.neo4j.bolt.v1.runtime.BoltStateMachineV1.process(BoltStateMachineV1.java:92)
at org.neo4j.bolt.messaging.BoltRequestMessageReader.lambda$doRead$1(BoltRequestMessageReader.java:89)
at org.neo4j.bolt.runtime.DefaultBoltConnection.processNextBatch(DefaultBoltConnection.java:191)
at org.neo4j.bolt.runtime.DefaultBoltConnection.processNextBatch(DefaultBoltConnection.java:139)
at org.neo4j.bolt.runtime.ExecutorBoltScheduler.executeBatch(ExecutorBoltScheduler.java:171)
at org.neo4j.bolt.runtime.ExecutorBoltScheduler.lambda$scheduleBatchOrHandleError$2(ExecutorBoltScheduler.java:154)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2018-12-12 11:30:29.554+0000 ERROR [o.n.k.i.p.Procedures] Cannot execute SQL statement select * from emp.
Error:
Cannot execute read result-set. Cannot execute read result-set.
java.lang.RuntimeException: Cannot execute read result-set.
at apoc.load.Jdbc$ResultSetIterator.get(Jdbc.java:214)
at apoc.load.Jdbc$ResultSetIterator.(Jdbc.java:178)
at apoc.load.Jdbc.executeQuery(Jdbc.java:93)
at apoc.load.Jdbc.jdbcParams(Jdbc.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.neo4j.kernel.impl.proc.ReflectiveProcedureCompiler$ReflectiveProcedure.apply(ReflectiveProcedureCompiler.java:664)
at org.neo4j.kernel.impl.proc.ProcedureRegistry.callProcedure(ProcedureRegistry.java:219)
at org.neo4j.kernel.impl.proc.Procedures.callProcedure(Procedures.java:290)
at org.neo4j.kernel.impl.newapi.AllStoreHolder.callProcedure(AllStoreHolder.java:1035)
at org.neo4j.kernel.impl.newapi.AllStoreHolder.procedureCallRead(AllStoreHolder.java:800)
at org.neo4j.cypher.internal.runtime.interpreted.CallSupport$$anonfun$2.apply(CallSupport.scala:62)
at org.neo4j.cypher.internal.runtime.interpreted.CallSupport$$anonfun$2.apply(CallSupport.scala:62)
at org.neo4j.cypher.internal.runtime.interpreted.CallSupport$.callProcedure(CallSupport.scala:165)
at org.neo4j.cypher.internal.runtime.interpreted.CallSupport$.callReadOnlyProcedure(CallSupport.scala:64)
at org.neo4j.cypher.internal.runtime.interpreted.TransactionBoundQueryContext.callReadOnlyProcedure(TransactionBoundQueryContext.scala:974)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext$$anonfun$callReadOnlyProcedure$1.apply(ExceptionTranslatingQueryContext.scala:165)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext$$anonfun$callReadOnlyProcedure$1.apply(ExceptionTranslatingQueryContext.scala:165)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslationSupport$class.translateException(ExceptionTranslationSupport.scala:33)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext.translateException(ExceptionTranslatingQueryContext.scala:41)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslationSupport$class.translateIterator(ExceptionTranslationSupport.scala:47)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext.translateIterator(ExceptionTranslatingQueryContext.scala:41)
at org.neo4j.cypher.internal.compatibility.v3_5.ExceptionTranslatingQueryContext.callReadOnlyProcedure(ExceptionTranslatingQueryContext.scala:165)
at org.neo4j.cypher.internal.runtime.interpreted.DelegatingQueryContext.callReadOnlyProcedure(DelegatingQueryContext.scala:249)
at org.neo4j.cypher.internal.runtime.LazyReadOnlyCallMode.callProcedure(ProcedureCallMode.scala:47)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.ProcedureCallPipe.org$neo4j$cypher$internal$runtime$interpreted$pipes$ProcedureCallPipe$$call(ProcedureCallPipe.scala:83)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.ProcedureCallPipe$$anon$$$$e6882d5096c8b8441ac36d3c0cc459e$$$$ateResultsByAppending$1.apply(ProcedureCallPipe.scala:67)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.ProcedureCallPipe$$anon$$$$e6882d5096c8b8441ac36d3c0cc459e$$$$ateResultsByAppending$1.apply(ProcedureCallPipe.scala:65)
at scala.collection.Iterator$$anon$12.nextCur(Iterator.scala:435)
at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:441)
at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:440)
at scala.collection.Iterator$class.foreach(Iterator.scala:891)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:59)
at scala.collection.immutable.VectorBuilder.$plus$plus$eq(Vector.scala:732)
at scala.collection.immutable.VectorBuilder.$plus$plus$eq(Vector.scala:708)
at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:310)
at scala.collection.AbstractIterator.to(Iterator.scala:1334)
at scala.collection.TraversableOnce$class.toIndexedSeq(TraversableOnce.scala:300)
at scala.collection.AbstractIterator.toIndexedSeq(Iterator.scala:1334)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.EagerPipe.internalCreateResults(EagerPipe.scala:29)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.PipeWithSource.createResults(Pipe.scala:76)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.PipeWithSource.createResults(Pipe.scala:72)
at org.neo4j.cypher.internal.runtime.interpreted.pipes.PipeWithSource.createResults(Pipe.scala:72)
at org.neo4j.cypher.internal.compatibility.v3_5.runtime.executionplan.BaseExecutionResultBuilderFactory$BaseExecutionWorkflowBuilder.build(DefaultExecutionResultBuilderFactory.scala:61)
at org.neo4j.cypher.internal.compatibility.InterpretedRuntime$InterpretedExecutionPlan.run(InterpretedRuntime.scala:84)
at org.neo4j.cypher.internal.compatibility.CypherCurrentCompiler$CypherExecutableQuery$$anonfun$execute$1.apply(CypherCurrentCompiler.scala:199)
at org.neo4j.cypher.internal.compatibility.CypherCurrentCompiler$CypherExecutableQuery$$anonfun$execute$1.apply(CypherCurrentCompiler.scala:177)
at org.neo4j.cypher.exceptionHandler$runSafely$.apply(exceptionHandler.scala:89)
at org.neo4j.cypher.internal.compatibility.CypherCurrentCompiler$CypherExecutableQuery.execute(CypherCurrentCompiler.scala:218)
at org.neo4j.cypher.internal.ExecutionEngine.execute(ExecutionEngine.scala:101)
at org.neo4j.cypher.internal.javacompat.ExecutionEngine.executeQuery(ExecutionEngine.java:85)
at org.neo4j.bolt.v1.runtime.TransactionStateMachineV1SPI$BoltResultHandleV1.start(TransactionStateMachineV1SPI.java:189)
at org.neo4j.bolt.v1.runtime.TransactionStateMachine$State.startExecution(TransactionStateMachine.java:506)
at org.neo4j.bolt.v1.runtime.TransactionStateMachine$State$2.run(TransactionStateMachine.java:385)
at org.neo4j.bolt.v1.runtime.TransactionStateMachine.run(TransactionStateMachine.java:110)
at org.neo4j.bolt.v1.runtime.TransactionStateMachine.run(TransactionStateMachine.java:98)
at org.neo4j.bolt.v3.runtime.TransactionReadyState.processRunMessage(TransactionReadyState.java:82)
at org.neo4j.bolt.v3.runtime.TransactionReadyState.processUnsafe(TransactionReadyState.java:49)
at org.neo4j.bolt.v3.runtime.FailSafeBoltStateMachineState.process(FailSafeBoltStateMachineState.java:48)
at org.neo4j.bolt.v1.runtime.BoltStateMachineV1.nextState(BoltStateMachineV1.java:144)
at org.neo4j.bolt.v1.runtime.BoltStateMachineV1.process(BoltStateMachineV1.java:92)
at org.neo4j.bolt.messaging.BoltRequestMessageReader.lambda$doRead$1(BoltRequestMessageReader.java:89)
at org.neo4j.bolt.runtime.DefaultBoltConnection.processNextBatch(DefaultBoltConnection.java:191)
at org.neo4j.bolt.runtime.DefaultBoltConnection.processNextBatch(DefaultBoltConnection.java:139)
at org.neo4j.bolt.runtime.ExecutorBoltScheduler.executeBatch(ExecutorBoltScheduler.java:171)
at org.neo4j.bolt.runtime.ExecutorBoltScheduler.lambda$scheduleBatchOrHandleError$2(ExecutorBoltScheduler.java:154)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
at apoc.load.Jdbc$ResultSetIterator.convert(Jdbc.java:234)
at apoc.load.Jdbc$ResultSetIterator.get(Jdbc.java:208)
... 72 more

[ameyasoft]

Hi,

Copy the MS SQL jdbc driver jar file to plugins folder and run this:
call apoc.load.driver("com.microsoft.sqlserver.jdbc.SQLServerDriver").

Try running your jdbc query. This worked for me and could connect to SQL server with 3.5.0 version.

-Kamal

[mkchikkala]

Hi Kamal,

I already have sqljdbc42.jar file under plugins folder.
The same configuration worked with older apoc libraries, but in the 3.5 version it isn't.

[ameyasoft]

Hi,

I used jdbc diver version 6.2 (name: mssql-jdbc-6.2.2.jre8.jar) from Microsift site.
I am using MS SQL 2014.

After downloading I copied the .jar file to plugins folder and ran this script:
call apoc.load.driver("com.microsoft.sqlserver.jdbc.SQLServerDriver")

Then ran the call apoc.load.jdbc() script.
-Kamal