Cross Index Migration

Elastic Stack Elasticsearch
1

Hello,

I am trying to migrate my Indexes with version upgrade.

The challenge here is I want to migrate the data to a modified index i.e. with less number fields and change in Field type on need basis.

Example:

If Index1 has 10 fields, I do not want to migrate all 10 fields since I am not making use of couple of fields i want to skip them and migrate the rest of the data. Also all the Type has to be changed to String to Keyword

2

Have you looked at the reindex API? https://www.elastic.co/guide/en/elasticsearch/reference/5.5/docs-reindex.html

3

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