# Change datatype for responsetimemillis field from String to Number

**URL:** <https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757>\
**Category:** Elasticsearch\
**Created:** [August 11, 2016, 5:59am UTC](https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757 "2016-08-11T05:59:08Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Viswanath\_S](https://avatars.discourse-cdn.com/v4/letter/v/8c91f0/32.png) [@Viswanath\_S](https://discuss.elastic.co/u/Viswanath_S)\
**Post date:** [August 11, 2016, 5:59am UTC](https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757/1 "2016-08-11T05:59:08Z")

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Hi,

I have parsed my access logs using logstash. In my grok filter, i have given as %{NONNEGINT:responsetimemillis} in Kibana i could see that responsetimemillis is showing as string and not a number/integer. can someone help me understand why. also how can i change the datatype to Number in elasticsearch now.

Thanks,  
Viswanath

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<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [August 11, 2016, 6:00am UTC](https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757/2 "2016-08-11T06:00:00Z")

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You cannot change it without a reindex.  
You need to cast it as an an int - `{NONNEGINT:responsetimemillis:int}` - in LS or set it via mappings

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<div class="post-metadata">

**Author:** ![Viswanath\_S](https://avatars.discourse-cdn.com/v4/letter/v/8c91f0/32.png) [@Viswanath\_S](https://discuss.elastic.co/u/Viswanath_S)\
**Post date:** [August 11, 2016, 6:02am UTC](https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757/3 "2016-08-11T06:02:16Z")

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Hi Mark,  
Can you please help me how to set it via mappings.

Thanks,  
Viswanath

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<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [August 11, 2016, 6:03am UTC](https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757/4 "2016-08-11T06:03:29Z")

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What does the mapping for the field look like now?

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<div class="post-metadata">

**Author:** ![Viswanath\_S](https://avatars.discourse-cdn.com/v4/letter/v/8c91f0/32.png) [@Viswanath\_S](https://discuss.elastic.co/u/Viswanath_S)\
**Post date:** [August 11, 2016, 6:08am UTC](https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757/5 "2016-08-11T06:08:17Z")

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`"responsetimemillis": { "type": "string", "norms": { "enabled": false }, "fielddata": { "format": "disabled" }, "fields": { "raw": { "type": "string", "index": "not_analyzed", "ignore_above": 256 } } },`

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<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [August 11, 2016, 9:02pm UTC](https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757/6 "2016-08-11T21:02:48Z")

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```auto
"responsetimemillis": {
"type": "integer",
},

```

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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:** [July 5, 2017, 10:28pm UTC](https://discuss.elastic.co/t/change-datatype-for-responsetimemillis-field-from-string-to-number/57757/7 "2017-07-05T22:28:15Z")

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