Elasticsearch 7.7.1 Increasing index.mapping.total_fields.limit

Elastic Stack Elasticsearch
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I have read the below discussions

Can someone let me know,

  • How much approx memory overhead does a new field in index add to? So basically If I need to increase index.mapping.total_field.limit from the default 1000 (to let's say 3000) adding how much more resources (heap, nodes in cluster ) may help ?
  • If I am increasing index.mapping.total_field.limit then will it help if I move to Elasticsearch 7.10? I have gone through the release notes but could not locate anything. So just confirming.
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  1. Depends on what sort of field it is. You'd really need to test it with your data
  2. Upgrading is always a good idea for general improvements, but unless the release notes specifically call out improvements in that area then there may not be a big boost
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