# Error message LEAK: ByteBuf.release() in /var/log/logstash-plain.log

**URL:** <https://discuss.elastic.co/t/error-message-leak-bytebuf-release-in-var-log-logstash-plain-log/275824>\
**Category:** Logstash\
**Created:** [June 14, 2021, 10:38am UTC](https://discuss.elastic.co/t/error-message-leak-bytebuf-release-in-var-log-logstash-plain-log/275824 "2021-06-14T10:38:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jgkootstra](https://avatars.discourse-cdn.com/v4/letter/j/278dde/32.png) [@jgkootstra](https://discuss.elastic.co/u/jgkootstra)\
**Post date:** [June 14, 2021, 10:38am UTC](https://discuss.elastic.co/t/error-message-leak-bytebuf-release-in-var-log-logstash-plain-log/275824/1 "2021-06-14T10:38:23Z")

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io.netty.util.ResourceLeakDetector] LEAK: ByteBuf.release() was not called before it's garbage-collected. See [https://netty.io/wiki/reference-counted-objects.html](https://netty.io/wiki/reference-counted-objects.html) for more information. for more information.

What does this mean? Is there a leak in the LogStash code?

We are running logstash-7.13.1-1.x86\_64 on CentOS 7.9

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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:** [July 12, 2021, 10:38am UTC](https://discuss.elastic.co/t/error-message-leak-bytebuf-release-in-var-log-logstash-plain-log/275824/2 "2021-07-12T10:38:38Z")

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