Why Elasticsearch Mapping Explosion can causes OOM？

Elastic Stack Elasticsearch
2

It also depends on the total number of shards you have on your cluster.

What is the output of:

GET /
GET /_cat/nodes?v
GET /_cat/health?v
GET /_cat/indices?v

If some outputs are too big, please share them on gist.github.com and link them here.

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