Pierre Villard created NIFI-12322:
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Summary: Add resource usage documentation for
ElasticSearchClientServiceImpl
Key: NIFI-12322
URL: https://issues.apache.org/jira/browse/NIFI-12322
Project: Apache NiFi
Issue Type: Improvement
Reporter: Pierre Villard
Assignee: Pierre Villard
We observed a significant resource usage when using many ES controller service
instances. After investigation, it appears that the ES client relies on a
RestClient where the Apache Http Async Client starts by default one dispatcher
thread, and a number of worker threads used by the connection manager, as many
as the number of locally detected processors (depending on what
Runtime.getRuntime().availableProcessors() returns).
I think it'd be worth adding this in the documentation and the proper
annotation where relevant.
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