Grant Henke commented on KUDU-2297:

A lot of work has been done for 1.7.0:
 * KUDU-2297 (part 1): refactor metrics log out of ServerBase: 
 * KUDU-2297 (part 2). Convert diagnostics log to a format closer to glog: 

 * KUDU-2297 (part 3): refactor process-wide stack collection out of /stacks: 

 * KUDU-2297 (part 4): periodically dump stacks to diagnostics log: 
 * KUDU-2297 (part 5): dump stacks into diagnostics log on service queue 
 * KUDU-2297 (part 6): enable periodic stack sampling by default, avoid bias: 

Leaving open and moving to a target of 1.8.0 to track the remaining work of 
tooling to parse the log.

> Expand metrics logging into a general purpose diagnostics log
> -------------------------------------------------------------
>                 Key: KUDU-2297
>                 URL: https://issues.apache.org/jira/browse/KUDU-2297
>             Project: Kudu
>          Issue Type: Improvement
>          Components: ops-tooling, supportability
>    Affects Versions: 1.6.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Major
> Currently Kudu servers have the ability to periodically dump metrics to the 
> log. KUDU-2279 improved the compactness and performance of the log so it can 
> be enabled by default.
> In addition to metrics, though, it would be useful to have some other 
> machine-readable data periodically recorded by servers. For example, periodic 
> stack traces or RPC traces could be helpful for understanding latency issues 
> after-the-fact. This JIRA tracks the effort to convert the metrics log to a 
> more general-purpose diagnostics log.

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