Andrey Kuznetsov created IGNITE-9679:
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Summary: Document critical workers liveness checking implementation
Key: IGNITE-9679
URL: https://issues.apache.org/jira/browse/IGNITE-9679
Project: Ignite
Issue Type: Task
Components: documentation
Reporter: Andrey Kuznetsov
Assignee: Denis Magda
Fix For: 2.7
Newly implemented critical worker thread liveness checks should be mentioned in
Ignite Documentation. Brief description of the functionality follows.
Ignite node has a number of critical worker threads that should be alive and
responsive, otherwise node's health is not guaranteed. These threads monitor
each other periodically and track two aspects for a thread being checked:
- whether it's alive;
- whether it updates its internal heartbeat timestamp.
Both checks use {{IgniteConfiguration.failureDetectionTimeout}} property as a
threshold value.
Whenever at least one of the above conditions is violated, checker thread logs
the error and calls currently configured {{FailureHandler}}.
Liveness checks are enabled by default, but can be disabled through
{{WorkersControlMXBean.healthMonitoringEnabled}} property.
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