Update fields of logstash index on ElasticSearch

Elastic Stack Logstash
1

On ElasticSearch I have logstash index that are generated every day, I had changed the types of some of my fields, they had changed in the new indexes that was generated but not on the old index. Knowing that I can not delete my old indexs I want just the type of a field is changed on all existing indexs. I show you on the following picture: the default mapping by a former logstash index with the fields "TMP_REPONSE" to string while it needs to be long, which is the case on the new index.

default mapping of an old index logstash:

Capture2.PNG1899×411 120 KB

Thank you for showing me how I can solve this problem without removing the old indexs.

2

You have to reindex the old data. Details about how this can be done has been discussed here many times before, please check the archives.

3

I searched a lot, and I understood where does the problem but I do not know how I can re-index the old data on a default mapping
I want to be shown a little example on how to change the default mapping