# \[main\]\>worker0 disappears with update to logstash 6

**URL:** <https://discuss.elastic.co/t/main-worker0-disappears-with-update-to-logstash-6/125737>\
**Category:** Logstash\
**Created:** [March 27, 2018, 11:15am UTC](https://discuss.elastic.co/t/main-worker0-disappears-with-update-to-logstash-6/125737 "2018-03-27T11:15:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Antonio\_Oliva](https://avatars.discourse-cdn.com/v4/letter/a/b38774/32.png) [@Antonio\_Oliva](https://discuss.elastic.co/u/Antonio_Oliva)\
**Post date:** [March 27, 2018, 11:15am UTC](https://discuss.elastic.co/t/main-worker0-disappears-with-update-to-logstash-6/125737/1 "2018-03-27T11:15:15Z")

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In logstash 5.6.6 with command "ps -T -u logstash" or "top -H -u logstash" we can see de worker0 thread:

PID SPID TTY TIME CMD  
30185 30235 ? 1-22:02:44 [main]\>worker0  
...

But after update to logstash 6.2.3 this thread never appears.

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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:** [April 24, 2018, 11:15am UTC](https://discuss.elastic.co/t/main-worker0-disappears-with-update-to-logstash-6/125737/2 "2018-04-24T11:15:30Z")

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