I think index Mapping is a large JSON object. Even if each node sends a copy, the memory usage is limited. Why does it cause OOM?

Why Elasticsearch Mapping Explosion can causes OOM？

jiankunking (Jiankunking) January 14, 2022, 11:27pm 4

Whether there is a range for how much memory a mapping field can consume. This allows the user to estimate the memory usage of the mapping.

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Maximum number of fields in an index mapping Elasticsearch	3	8886	July 20, 2017