# Logstash 6.6.1 Crashing

**URL:** <https://discuss.elastic.co/t/logstash-6-6-1-crashing/197103>\
**Category:** Logstash\
**Created:** [August 28, 2019, 11:44am UTC](https://discuss.elastic.co/t/logstash-6-6-1-crashing/197103 "2019-08-28T11:44:38Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![msk\_76](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@msk\_76](https://discuss.elastic.co/u/msk_76)\
**Post date:** [August 28, 2019, 11:44am UTC](https://discuss.elastic.co/t/logstash-6-6-1-crashing/197103/1 "2019-08-28T11:44:38Z")

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I have a regular problem of logstash crashing with FATAL on Linux RHEL 6.9. The logstash version is 6.6.1.

The pipeline.yml contains following config :

- pipeline.id: sys\_username\_mapping  
pipeline.workers: 1  
path.config: "/pa/vertica\_backup\_qa/otherscripts/elk/logstash/logstash-6.6.1/config/sys\_username\_mapping/logstash-sys\_username\_mapping.conf"
- pipeline.id: sys\_useremail\_mapping  
pipeline.workers: 1  
path.config: "/pa/vertica\_backup\_qa/otherscripts/elk/logstash/logstash-6.6.1/config/sys\_useremail\_mapping/logstash-sys\_useremail\_mapping.conf"
- pipeline.id: ps\_lic\_server\_mapping  
pipeline.workers: 1  
path.config: "/pa/vertica\_backup\_qa/otherscripts/elk/logstash/logstash-6.6.1/config/ps\_lic\_server\_mapping/logstash-servergoup.conf"

Here is the logstash crash log snippet. Please help to understand the root cause

[2019-08-28T08:35:13,185][WARN][logstash.outputs.elasticsearch] Could not index event to Elasticsearch. {:status=\>400, :action=\>["index", {:\_id=\>"", :\_index=\>"sys\_useremail\_mapping", :\_type=\>"doc", :routing=\>nil}, #LogStash::Event:0x5015e843], :response=\>{"index"=\>{"\_index"=\>"sys\_useremail\_mapping", "\_type"=\>"doc", "\_id"=\>"", "status"=\>400, "error"=\>{"type"=\>"illegal\_argument\_exception", "reason"=\>"if \_id is specified it must not be empty"}}}}  
[2019-08-28T08:35:13,186][WARN][logstash.outputs.elasticsearch] Could not index event to Elasticsearch. {:status=\>400, :action=\>["index", {:\_id=\>"", :\_index=\>"sys\_useremail\_mapping", :\_type=\>"doc", :routing=\>nil}, #LogStash::Event:0x8a006bf], :response=\>{"index"=\>{"\_index"=\>"sys\_useremail\_mapping", "\_type"=\>"doc", "\_id"=\>"", "status"=\>400, "error"=\>{"type"=\>"illegal\_argument\_exception", "reason"=\>"if \_id is specified it must not be empty"}}}}  
[2019-08-28T09:01:25,235][FATAL][logstash.runner] An unexpected error occurred! {:error=\>#\<SystemCallError: Unknown error (SystemCallError) - \>, :backtrace=\>["org/jruby/RubyIO.java:1457:in `write'", "org/jruby/RubyIO.java:1428:in`write'", "/pa/vertica\_backup\_qa/otherscripts/elk/logstash/logstash-6.6.1/vendor/bundle/jruby/2.3.0/gems/logstash-output-stdout-3.1.4/lib/logstash/outputs/stdout.rb:43:in `block in multi_receive_encoded'", "org/jruby/RubyArray.java:1734:in`each'", "/pa/vertica\_backup\_qa/otherscripts/elk/logstash/logstash-6.6.1/vendor/bundle/jruby/2.3.0/gems/logstash-output-stdout-3.1.4/lib/logstash/outputs/stdout.rb:42:in `multi_receive_encoded'", "/pa/vertica_backup_qa/otherscripts/elk/logstash/logstash-6.6.1/logstash-core/lib/logstash/outputs/base.rb:87:in`multi\_receive'", "org/logstash/config/ir/compiler/OutputStrategyExt.java:114:in `multi_receive'", "org/logstash/config/ir/compiler/AbstractOutputDelegatorExt.java:97:in`multi\_receive'", "/pa/vertica\_backup\_qa/otherscripts/elk/logstash/logstash-6.6.1/logstash-core/lib/logstash/pipeline.rb:390:in `block in output_batch'", "org/jruby/RubyHash.java:1343:in`each'", "/pa/vertica\_backup\_qa/otherscripts/elk/logstash/logstash-6.6.1/logstash-core/lib/logstash/pipeline.rb:389:in `output_batch'", "/pa/vertica_backup_qa/otherscripts/elk/logstash/logstash-6.6.1/logstash-core/lib/logstash/pipeline.rb:341:in`worker\_loop'", "/pa/vertica\_backup\_qa/otherscripts/elk/logstash/logstash-6.6.1/logstash-core/lib/logstash/pipeline.rb:304:in `block in start\_workers'"]}  
[2019-08-28T09:01:25,370][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit

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<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [August 28, 2019, 12:07pm UTC](https://discuss.elastic.co/t/logstash-6-6-1-crashing/197103/2 "2019-08-28T12:07:49Z")

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> [@msk\_76](#):
>
> "reason"=\>"if \_id is specified it must not be empty"

That sounds like you are specifying the document\_id option on an elasticsearch output but the value is empty.

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<div class="post-metadata">

**Author:** ![msk\_76](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@msk\_76](https://discuss.elastic.co/u/msk_76)\
**Post date:** [September 16, 2019, 5:23am UTC](https://discuss.elastic.co/t/logstash-6-6-1-crashing/197103/3 "2019-09-16T05:23:05Z")

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Thanks. This is solved now.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [October 14, 2019, 5:23am UTC](https://discuss.elastic.co/t/logstash-6-6-1-crashing/197103/4 "2019-10-14T05:23:05Z")

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