# Java Illegal State Exception: Logstash stopped processing

**URL:** <https://discuss.elastic.co/t/java-illegal-state-exception-logstash-stopped-processing/156353>\
**Category:** Logstash\
**Created:** [November 12, 2018, 9:42pm UTC](https://discuss.elastic.co/t/java-illegal-state-exception-logstash-stopped-processing/156353 "2018-11-12T21:42:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![slightlyjaded](https://avatars.discourse-cdn.com/v4/letter/s/e9bcb4/32.png) [@slightlyjaded](https://discuss.elastic.co/u/slightlyjaded)\
**Post date:** [November 12, 2018, 9:42pm UTC](https://discuss.elastic.co/t/java-illegal-state-exception-logstash-stopped-processing/156353/1 "2018-11-12T21:42:10Z")

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Hello,

Im trying to use ELK + Elastiflow to analyze netflow and I'm running into an issue with logstash.

I followed this tutorial: [http://blogs.catapultsystems.com/mdowst/archive/2018/06/18/install-elastiflow-on-ubuntu-18-04-part-3/#](http://blogs.catapultsystems.com/mdowst/archive/2018/06/18/install-elastiflow-on-ubuntu-18-04-part-3/#)

Heap is 8gb

I am not seeing any data in logstash - and I receive the following errors when I tail the logstash log:

tail -f /var/log/logstash/logstash-plain.log  
[2018-11-12T18:26:44,022][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:26:59,010][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:27:13,806][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:27:28,544][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:27:43,216][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:27:58,609][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:28:13,531][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:28:28,517][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:28:43,377][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit  
[2018-11-12T18:28:57,976][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit

I have tried on both ubuntu 18.04 and 16.04 and get the same results.

Can anyone help me understand what is going wrong and point me in the right direction? The logs don't provide me very much info.

Thanks

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 10, 2018, 9:42pm UTC](https://discuss.elastic.co/t/java-illegal-state-exception-logstash-stopped-processing/156353/2 "2018-12-10T21:42:12Z")

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