(EventCondition.java:679)
at org.logstash.config.ir.compiler.EventCondition$Compiler.compare(EventCondition.java:453)
at org.logstash.config.ir.compiler.EventCondition$Compiler.lambda$compareFieldToConstant$11(EventCondition.java:444)
at org.logstash.config.ir.compiler.EventCondition$Compiler.lambda$booleanCondition$4(EventCondition.java:162)
at org.logstash.config.ir.compiler.Utils.filterEvents(Utils.java:47)
at org.logstash.generated.CompiledDataset22.compute(Unknown Source)
at org.logstash.generated.CompiledDataset24.compute(Unknown Source)
at org.logstash.generated.CompiledDataset57.compute(Unknown Source)
at org.logstash.generated.CompiledDataset60.compute(Unknown Source)
at org.logstash.generated.CompiledDataset61.compute(Unknown Source)
at org.logstash.generated.CompiledDataset62.compute(Unknown Source)
at org.logstash.generated.CompiledDataset63.compute(Unknown Source)
at org.logstash.generated.CompiledDataset64.compute(Unknown Source)
at org.logstash.generated.CompiledDataset67.compute(Unknown Source)
at org.logstash.config.ir.compiler.DatasetCompiler$Complement.compute(DatasetCompiler.java:495)
at org.logstash.generated.CompiledDataset68.compute(Unknown Source)
at org.logstash.generated.CompiledDataset69.compute(Unknown Source)
at org.logstash.generated.CompiledDataset70.compute(Unknown Source)
at org.logstash.generated.CompiledDataset71.compute(Unknown Source)
at org.logstash.generated.CompiledDataset72.compute(Unknown Source)
at org.logstash.generated.CompiledDataset133.compute(Unknown Source)
at org.logstash.generated.CompiledDataset134.compute(Unknown Source)
at org.logstash.generated.CompiledDataset135.compute(Unknown Source)
at org.logstash.generated.CompiledDataset136.compute(Unknown Source)
at org.logstash.generated.CompiledDataset137.compute(Unknown Source)
at org.logstash.generated.CompiledDataset138.compute(Unknown Source)
at org.logstash.config.ir.CompiledPipeline$CompiledOrderedExecution.compute(CompiledPipeline.java:321)
at org.logstash.config.ir.CompiledPipeline$CompiledOrderedExecution.compute(CompiledPipeline.java:311)
at org.logstash.execution.WorkerLoop.run(WorkerLoop.java:83)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:426)
at org.jruby.javasupport.JavaMethod.invokeDirect(JavaMethod.java:293)
at org.jruby.java.invokers.InstanceMethodInvoker.call(InstanceMethodInvoker.java:24)
at org.jruby.java.invokers.InstanceMethodInvoker.call(InstanceMethodInvoker.java:86)
at org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:207)
at usr.share.logstash.logstash_minus_core.lib.logstash.java_pipeline.RUBY$block$start_workers$5(/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:278)
at org.jruby.runtime.CompiledIRBlockBody.callDirect(CompiledIRBlockBody.java:138)
at org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:58)
at org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:52)
at org.jruby.runtime.Block.call(Block.java:139)
at org.jruby.RubyProc.call(RubyProc.java:318)
at org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:105)
at java.base/java.lang.Thread.run(Thread.java:832)
[FATAL] 2020-12-16 15:20:52.287 [LogStash::Runner] runner - An unexpected error occurred! {:error=>java.lang.IllegalStateException: java.lang.NullPointerException, :backtrace=>["org.logstash.execution.WorkerLoop.run(org/logstash/execution/WorkerLoop.java:105)", "jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)", "jdk.internal.reflect.NativeMethodAccessorImpl.invoke(jdk/internal/reflect/NativeMethodAccessorImpl.java:62)", "jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(jdk/internal/reflect/DelegatingMethodAccessorImpl.java:43)", "java.lang.reflect.Method.invoke(java/lang/reflect/Method.java:564)", "org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(org/jruby/javasupport/JavaMethod.java:426)", "org.jruby.javasupport.JavaMethod.invokeDirect(org/jruby/javasupport/JavaMethod.java:293)", "usr.share.logstash.logstash_minus_core.lib.logstash.java_pipeline.start_workers(/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:278)", "org.jruby.RubyProc.call(org/jruby/RubyProc.java:318)", "java.lang.Thread.run(java/lang/Thread.java:832)"]}
[ERROR] 2020-12-16 15:20:52.309 [LogStash::Runner] Logstash - java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit
```
---
### Author:  [@elasticforme](https://discuss.elastic.co/u/elasticforme)
#### Post date: [December 16, 2020, 10:31pm UTC](https://discuss.elastic.co/t/logstash-crash-with-fatal-error/258919/5 "2020-12-16T22:31:16Z")
Badger,
How do I find out which one is doing this?
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [December 16, 2020, 10:41pm UTC](https://discuss.elastic.co/t/logstash-crash-with-fatal-error/258919/6 "2020-12-16T22:41:17Z")
I do not think you can tell. If there is any chance that the field will not exist you need to test whether it exists before doing a numeric comparison to it.
---
### Author:  [@elasticforme](https://discuss.elastic.co/u/elasticforme)
#### Post date: [December 16, 2020, 10:46pm UTC](https://discuss.elastic.co/t/logstash-crash-with-fatal-error/258919/7 "2020-12-16T22:46:41Z")
ok. I am doing this for almost all field which I do comparison.
this means I have to test out one by one and find out which one is doing this.
---
### Author:  [@elasticforme](https://discuss.elastic.co/u/elasticforme)
#### Post date: [December 17, 2020, 4:50pm UTC](https://discuss.elastic.co/t/logstash-crash-with-fatal-error/258919/8 "2020-12-17T16:50:08Z")
Found it. it took me many hour. just break down long code to small chunk.
but most time it took to find out which record it is failing and then nail down what it was.
one of the field I was creating using ruby. but it was not getting created in one case. and then on bottom of the code I was testing that value. Thank you both of you
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 14, 2021, 4:50pm UTC](https://discuss.elastic.co/t/logstash-crash-with-fatal-error/258919/9 "2021-01-14T16:50:12Z")
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