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https://issues.apache.org/jira/browse/IGNITE-29216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18137087#comment-18137087
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Ignite TC Bot commented on IGNITE-29216:
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"CDC extensions: Added cache conflict-resolution metrics and avoided treating
repeated identical updates as resolution failures."
The Release Note field has been filled with the wording above. Please review it
and edit it if needed.
> Add metric for CacheVersionConflictResolver resolution failures
> ---------------------------------------------------------------
>
> Key: IGNITE-29216
> URL: https://issues.apache.org/jira/browse/IGNITE-29216
> Project: Ignite
> Issue Type: Task
> Reporter: Dmitry Werner
> Assignee: Dmitry Werner
> Priority: Major
> Labels: ise, metrics-to-log
> Fix For: 2.20
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> CacheVersionConflictResolverImpl (the default conflict resolver of the CDC
> extension) logs an unresolvable conflict as an error ("Conflict can't be
> resolved, update ignored" / "remove ignored") and drops the incoming update.
> The only metric that reflects it is ConflictResolverRejectedCount, but such
> updates are counted there together with regular rejections (outdated or
> duplicate updates from the same cluster, updates that lose the field-based
> comparison), which happen routinely during CDC replication. So lost updates
> can't be told apart from normal operation.
> Add a counter metric (e.g. ConflictResolverErrorsCount) that increases each
> time a conflict can't be resolved, so that lost CDC updates can be monitored
> and alerted on. Such updates remain counted in ConflictResolverRejectedCount,
> so regular rejections are ConflictResolverRejectedCount -
> ConflictResolverErrorsCount.
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