# Netflow index issues

**URL:** https://discuss.elastic.co/t/netflow-index-issues/129522
**Category:** Logstash
**Created:** [April 25, 2018, 3:15pm UTC](https://discuss.elastic.co/t/netflow-index-issues/129522 "2018-04-25T15:15:55Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Andreas\_Kaiser](https://avatars.discourse-cdn.com/v4/letter/a/b9bd4f/32.png) [@Andreas\_Kaiser](https://discuss.elastic.co/u/Andreas_Kaiser)
#### Post date: [April 25, 2018, 3:15pm UTC](https://discuss.elastic.co/t/netflow-index-issues/129522/1 "2018-04-25T15:15:56Z")

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Hello everybody,

i tried to setup netflow logstash based on this tutorial :

[https://www.elastic.co/guide/en/logstash/current/netflow-module.html](https://www.elastic.co/guide/en/logstash/current/netflow-module.html)

Everything works fine except the kibana dashboards

I get a lot of errors like following

```
Visualize: Fielddata is disabled on text fields by default. Set fielddata=true on [netflow.dst_addr] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. 

```

 ![error](https://us1.discourse-cdn.com/elastic/original/3X/1/6/16c2699ad3a4293bb36f3e86c0857bf66e9afcb8.png)

I am not sure if i did something wrong or the provided index is broken

Please help

Best regards

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<div class="post-metadata">

### Author: ![anhlqn](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/anhlqn/32/5454_2.png) [@anhlqn](https://discuss.elastic.co/u/anhlqn)
#### Post date: [April 25, 2018, 9:13pm UTC](https://discuss.elastic.co/t/netflow-index-issues/129522/2 "2018-04-25T21:13:46Z")

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Text fields by default cannot be used for aggregation. You have to either map the fields as `keyword` type or set `fielddata` to true for the text fields, which consumes more memory.

Keyword type [https://www.elastic.co/guide/en/elasticsearch/reference/6.2/keyword.html](https://www.elastic.co/guide/en/elasticsearch/reference/6.2/keyword.html)

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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: [May 23, 2018, 9:13pm UTC](https://discuss.elastic.co/t/netflow-index-issues/129522/3 "2018-05-23T21:13:53Z")

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