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https://issues.apache.org/jira/browse/IGNITE-29047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ignite TC Bot updated IGNITE-29047:
-----------------------------------
External issue ID: IGN-2421
> Add ignored failure count metric to FailureProcessor
> ----------------------------------------------------
>
> Key: IGNITE-29047
> URL: https://issues.apache.org/jira/browse/IGNITE-29047
> Project: Ignite
> Issue Type: Task
> Reporter: Dmitry Werner
> Assignee: Dmitry Werner
> Priority: Major
> Labels: metrics-to-log
> Fix For: 2.19
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> *Problem*
> When a FailureHandler is configured to ignore certain failure types (via
> AbstractFailureHandler#setIgnoredFailureTypes), the corresponding failures
> are silently suppressed — only a warning is logged. There is no way to
> observe, through the metrics system, how many failures of each type have been
> suppressed on a node. Operators monitoring a cluster have no visibility into
> the rate/volume of ignored failures, which makes it hard to detect recurring
> critical conditions (e.g. a repeatedly blocked system worker) that are being
> deliberately tolerated.
> *Proposed Solution*
> Expose one long counter per ignored failure type, registered under a
> dedicated metrics registry failure.ignored. Each counter is incremented every
> time FailureProcessor suppresses a failure of the matching type. Counters are
> created only for the failure types the configured handler actually ignores,
> so no metrics are registered when nothing is ignored.
> *Proposed change*
> - Register a new metrics registry "failure.ignored" in FailureProcessor.
> - Add a long counter per ignored failure type, incremented every time a
> failure is suppressed (ignored) by the configured failure handler — i.e.
> exactly where IGNORED_FAILURE_LOG_MSG is printed.
> - Keep the existing log message unchanged.
> - Document the new metric in docs/_docs/monitoring-metrics/new-metrics.adoc.
> - Add FailureProcessorMetricsTest covering per-type counting and the
> no-metrics-when-nothing-ignored case.
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