Marton Elek created HDDS-3236:
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Summary: Fix Dropwizard metrics mapping for latest Ratis metrics
Key: HDDS-3236
URL: https://issues.apache.org/jira/browse/HDDS-3236
Project: Hadoop Distributed Data Store
Issue Type: Improvement
Reporter: Marton Elek
Assignee: Marton Elek
Ratis use dropwizard metrics where the key parameters of the metrics (like
group name or instance id) are part of the name of the metrics instead of using
a tag.
For example
{code:java}
ratis.log_appender.851cb00a-af97-455a-b079-d94a77d2a936@group-C14654DE8C2C.follower_65f881ea-8794-403d-be77-a030ed79c341_match_index
{code}
Instead of
{code:java}
ratis.log_appender_match_index{group="group-C14654DE8C2C",...} {code}
It makes hard to combine the same metrics (match_index) from different sources.
HDDS-2950 implemented a regexp based workaround, but the regexp doesn't match
for the latest Ratis metrics.
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