# Out of memory exception under high load

**URL:** <https://discuss.elastic.co/t/out-of-memory-exception-under-high-load/125267>\
**Category:** Logstash\
**Created:** [March 22, 2018, 8:59pm UTC](https://discuss.elastic.co/t/out-of-memory-exception-under-high-load/125267 "2018-03-22T20:59:33Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [March 25, 2018, 9:13am UTC](https://discuss.elastic.co/t/out-of-memory-exception-under-high-load/125267/2 "2018-03-25T09:13:58Z")

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Which version of Logstash are you using? Are you using the grok filter?

I have seen [reports of a memory leak within the grok filter](https://discuss.elastic.co/t/5-6-8-java-lang-outofmemoryerror-after-6-10-days/124265), which I believe has been fixed in version 4.0.3 of this filter. You can check which version of the plugin you are using through the following command: `bin/logstash-plugin list --verbose`

If you are on an older version, you can [update that plugin](https://www.elastic.co/guide/en/logstash/6.2/working-with-plugins.html#updating-plugins) and see if that makes a difference.

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_[View the full topic](https://discuss.elastic.co/t/out-of-memory-exception-under-high-load/125267)._