# "no cached mapping for this field"
**URL:** https://discuss.elastic.co/t/no-cached-mapping-for-this-field/255514
**Category:** Kibana
**Created:** [November 16, 2020, 11:45am UTC](https://discuss.elastic.co/t/no-cached-mapping-for-this-field/255514 "2020-11-16T11:45:28Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@obloboblo](https://discuss.elastic.co/u/obloboblo)
#### Post date: [November 16, 2020, 11:45am UTC](https://discuss.elastic.co/t/no-cached-mapping-for-this-field/255514/1 "2020-11-16T11:45:28Z")
hello
I've seen that a warning from the topic subject makes some troubles also for other users on this forum, but I believe this one is new here.
this warning shows for a field with epoch timestamp value. after some time I finally did ingest (via syslog) it with a set indexing template (otherwise it would be interpreted as a number).
while looking at the event in Kibana the field is "Unkonwn field" and the value (shows as a number) has this "no cached ...".
`GET my_index/_mapping/field/timestamp_event`
```
{
"my_index" : {
"mappings" : {
"timestamp_event" : {
"full_name" : "timestamp_event",
"mapping" : {
"timestamp_event" : {
"type" : "date",
"format" : "epoch_second"
```
I would like to see it as a human readable date not a strange number, but can't make it even though countless refreshing, index deletes, ingests and Kibana restarts.
Any idea what I did wrong? Seems I can't find it myself 😕
regards!
---
### Author:  [@obloboblo](https://discuss.elastic.co/u/obloboblo)
#### Post date: [November 17, 2020, 12:15pm UTC](https://discuss.elastic.co/t/no-cached-mapping-for-this-field/255514/2 "2020-11-17T12:15:19Z")
heh, ok. i don't know what has happened. just checked this afternoon.
machine restart (it's a single virtual machine with the elastic + kibina on it) helped. but this not sth that I would like to see on production environment or a diagnosing method. date is correct and no warning info in Kibana.
any ideas? both Kibana and Elastic logs are clear. also API output doesn't shown any signs of concern.
regards
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [November 17, 2020, 11:03pm UTC](https://discuss.elastic.co/t/no-cached-mapping-for-this-field/255514/3 "2020-11-17T23:03:26Z")
Did you try to refresh the mapping of the index pattern?
---
### Author:  [@obloboblo](https://discuss.elastic.co/u/obloboblo)
#### Post date: [November 18, 2020, 7:36am UTC](https://discuss.elastic.co/t/no-cached-mapping-for-this-field/255514/4 "2020-11-18T07:36:58Z")
yes, that was the first thing I did. actually, few times. event tried to get rid of the index and populate it from the very beginning.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 16, 2020, 7:37am UTC](https://discuss.elastic.co/t/no-cached-mapping-for-this-field/255514/5 "2020-12-16T07:37:02Z")
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