# Dissect filter mapping

**URL:** https://discuss.elastic.co/t/dissect-filter-mapping/260705
**Category:** Logstash
**Created:** [January 11, 2021, 10:46am UTC](https://discuss.elastic.co/t/dissect-filter-mapping/260705 "2021-01-11T10:46:25Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![ashok9177](https://avatars.discourse-cdn.com/v4/letter/a/edb3f5/32.png) [@ashok9177](https://discuss.elastic.co/u/ashok9177)
#### Post date: [January 11, 2021, 10:46am UTC](https://discuss.elastic.co/t/dissect-filter-mapping/260705/1 "2021-01-11T10:46:25Z")

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Hi, I want extract only one field after [HOT\_KV\_LOG] from the below log message with dissect filter, anyone help me

```auto
[HOT_KV_LOG] [msg_process] level __keyword="INFO" type__ keyword="MESSAGE_PROCESSED" e2e_latency__number=758 

```

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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: [January 11, 2021, 3:08pm UTC](https://discuss.elastic.co/t/dissect-filter-mapping/260705/2 "2021-01-11T15:08:25Z")

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> [@ashok9177](#):
>
> I want extract only one field

What field do you want to extract and what have you tried?

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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: [February 8, 2021, 3:08pm UTC](https://discuss.elastic.co/t/dissect-filter-mapping/260705/3 "2021-02-08T15:08:36Z")

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