Can't unambiguously select between fixed arity signatures error in nifi 1.16.3

[#1]

Hello Experts,

I am trying to upgrade nifi from 1.12.1 version to 1.16.3.

I have a script 'ECMAScript' which was working fine in 1.12.1and now behaving different in 1.16.3.

Below is the portion of code giving error in 1.16 version when 'xyzId' is null.

But it just logs null as expected in 1.12 version
 

var xyzId = flowFile.getAttribute('xyzId');
log.info(xyzId);

Below is the error in 1.16 version when null value received for above line (log.info() line throws below error)

imer-Driven Process Thread-8] o.a.nifi.processors.script.ExecuteScript ExecuteScript[id=bae38131-0181-1000-29af-196312cdd9d9] ExecuteScript[id=bae38131-0181-1000-29af-196312cdd9d9] failed to process due to org.apache.nifi.processor.exception.ProcessException: java.lang.RuntimeException: java.lang.NoSuchMethodException: Can't unambiguously select between fixed arity signatures [(org.apache.nifi.logging.LogMessage), (java.lang.String)] of the method org.apache.nifi.controller.TerminationAwareLogger.info for argument types [null]; rolling back session
org.apache.nifi.processor.exception.ProcessException: java.lang.RuntimeException: java.lang.NoSuchMethodException: Can't unambiguously select between fixed arity signatures [(org.apache.nifi.logging.LogMessage), (java.lang.String)] of the method org.apache.nifi.controller.TerminationAwareLogger.info for argument types [null]
at org.apache.nifi.processors.script.ExecuteScript.onTrigger(ExecuteScript.java:245)
at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1283)
at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:214)
at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:103)
at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
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.RuntimeException: java.lang.NoSuchMethodException: Can't unambiguously select between fixed arity signatures [(org.apache.nifi.logging.LogMessage), (java.lang.String)] of the method org.apache.nifi.controller.TerminationAwareLogger.info for argument types [null]
at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:397)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:449)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:406)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:402)
at jdk.nashorn.api.scripting.NashornScriptEngine.eval(NashornScriptEngine.java:155)
at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:264)
at org.apache.nifi.script.impl.JavascriptScriptRunner.run(JavascriptScriptRunner.java:39)
at org.apache.nifi.processors.script.ExecuteScript.onTrigger(ExecuteScript.java:228)
... 11 common frames omitted
Caused by: java.lang.NoSuchMethodException: Can't unambiguously select between fixed arity signatures [(org.apache.nifi.logging.LogMessage), (java.lang.String)] of the method org.apache.nifi.controller.TerminationAwareLogger.info for argument types [null]
at jdk.internal.dynalink.beans.OverloadedMethod.throwAmbiguousMethod(OverloadedMethod.java:225)
at jdk.nashorn.internal.scripts.Script$299$\^eval\_.:program(<eval>:13)
at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:637)
at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:494)
at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:393)
... 18 common frames omitted


Any idea how to fix this? I want to avoid checking null values for logging also

 

Thanks

Mahendra

[#2 · Accepted solution]

@hegdemahendra ,

This looks like a regression to me. Could you please open a bug Jira on https://issues.apache.org/jira/projects/NIFI/ to report this issue?

A workaround for this would be to change your code like below:

log.info(String(xyzId));

Cheers

André

[#3]

Issue created : https://issues.apache.org/jira/browse/NIFI-10197