VM nmap count limit

ashwinisingh1 · October 30, 2024, 10:28pm

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):

Describe the issue:

Lucene tends to create huge number of nmaps with NMapDirectory configuration. ElasticSearch also suggests to configure vm.max_map_count to a very high value, ~2.5 million. Is there a way to control usage of nmaps usages. Which lucene component is responsible for high usage of nmaps ?

Configuration:

Relevant Logs or Screenshots:

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Mapping size is larger than 10MB - Why is it hardcoded? Reporting Plugin	0	528	September 13, 2022
Max virtual memory areas .max_map_count [65530] is too low Open Source Elasticsearch and Kibana	4	30077	November 20, 2023

VM nmap count limit

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