# LogStash: IdentityMapCodec has reached 100% capacity

**URL:** <https://discuss.elastic.co/t/logstash-identitymapcodec-has-reached-100-capacity/44473>\
**Category:** Logstash\
**Created:** [March 15, 2016, 6:12pm UTC](https://discuss.elastic.co/t/logstash-identitymapcodec-has-reached-100-capacity/44473 "2016-03-15T18:12:15Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![lohith](https://avatars.discourse-cdn.com/v4/letter/l/3ab097/32.png) [@lohith](https://discuss.elastic.co/u/lohith)\
**Post date:** [March 15, 2016, 6:12pm UTC](https://discuss.elastic.co/t/logstash-identitymapcodec-has-reached-100-capacity/44473/1 "2016-03-15T18:12:15Z")

</div>

In the Logstash logs, I see lots of errors such as like IdentityMapCodec has reached 100% capacity" and stops prcessing mesages .  
message=\>"IdentityMapCodec has reached 100% capacity", :current\_size=\>20000, :upper\_limit=\>20000, :level=\>:error}

How can I fix this issue ?

---

<div class="post-metadata">

**Author:** ![rajkamalkool6](https://avatars.discourse-cdn.com/v4/letter/r/e9c0ed/32.png) [@rajkamalkool6](https://discuss.elastic.co/u/rajkamalkool6)\
**Post date:** [April 1, 2016, 10:09am UTC](https://discuss.elastic.co/t/logstash-identitymapcodec-has-reached-100-capacity/44473/2 "2016-04-01T10:09:51Z")

</div>

I am also facing this kind of issue. Did any one have fix on this?

---

<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:** [July 6, 2017, 5:04am UTC](https://discuss.elastic.co/t/logstash-identitymapcodec-has-reached-100-capacity/44473/3 "2017-07-06T05:04:23Z")

</div>