Todd Lipcon created KUDU-2279:
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Summary: Enable metrics logging by default
Key: KUDU-2279
URL: https://issues.apache.org/jira/browse/KUDU-2279
Project: Kudu
Issue Type: New Feature
Components: ops-tooling
Affects Versions: 1.7.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
In a lot of cases, the granular metrics that we collect can be very useful to
understand performance problems. Our internal metrics tend to be much more
granular than what is supported by common metrics aggregation systems, so
having the local metrics log is useful even in the context of a managed
deployment. So, I'd like to move towards enabling metrics logging by default.
Currently, however, the metrics log can be quite verbose, since it's equivalent
to dumping all of the /metricsjson endpoint on a periodic basis. Even though we
gzip it, we burn a lot of CPU serializing a huge blob (eg /metricsjson is 87MB
on a tserver in one of our test clusters). Additionally, we don't currently
have the ability to delete old metrics logs automatically, so we'd be in danger
of filling up the log dir.
This JIRA tracks various bits of work on the way to enabling metrics logging by
default.
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