feat(query): Add metrics for failover - Githubissues

filodb / FiloDB

Distributed Prometheus time series database

Apache License 2.0

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feat(query): Add metrics for failover #1856

Closed kvpetrov closed 3 weeks ago

kvpetrov commented 3 weeks ago

Pull Request checklist

[X] The commit(s) message(s) follows the contribution guidelines ?
[ ] Tests for the changes have been added (for bug fixes / features) ?
[X] Docs have been added / updated (for bug fixes / features) ?

Current behavior : (link exiting issues here : https://help.github.com/articles/basic-writing-and-formatting-syntax/#referencing-issues-and-pull-requests)

If query server fails over to the buddy cluster because local FiloDB clusters have shard(s) down no metric is emitted.

New behavior : Now we emit 4 metrics:

legacy failover
full failover with local planning
partial failover (shard level failover) with local planning
failure to execute the query because no shards are available

BREAKING CHANGES N/A