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https://issues.apache.org/jira/browse/CHUKWA-515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12903920#action_12903920
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Bill Graham commented on CHUKWA-515:
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Thanks for the feedback Ari.
I was also concerned about holding onto to many data points, but was thinking
I'd use the write of a checkpoint as my timer, which I thought occurred at a
{{reportCommit}} invocation. (Maybe that's not the case?) The thought was to
not hold more than 5 minutes worth, which would be 60 data points per adaptor
if checkpoints happened every 5 seconds. Do the checkpoints happen at a
constant interval? If not, or if it's too frequent, I could set up a timer as
you suggest. This would allow me to go back longer in time and save less
frequently perhaps.
> Statistics REST API for Agent
> -----------------------------
>
> Key: CHUKWA-515
> URL: https://issues.apache.org/jira/browse/CHUKWA-515
> Project: Chukwa
> Issue Type: Sub-task
> Reporter: Bill Graham
> Assignee: Bill Graham
>
> Develop a REST interface to expose Agent statistics.
> * Request URI:
> {noformat}
> GET /rest/v1/adaptorStats HTTP/1.0
> {noformat}
> * For now I'm shooting for the XML response, but ultimately we can support
> optional params:
> {noformat}
> viewType=[json|xml|text] (default is XML?)
> {noformat}
> * Response XML
> TBD. My thought is to integrate with the {{AgentMetrics}} and
> {{ChunkQueueMetrics}} and show their information, along with a list of
> adaptors. It appears that the same {{MemQueue}} is shared amongst all
> adaptors, so we won't be able to expose per-adaptor stats as is. Let me know
> if I'm missing something there, or if you have comments in general about the
> approach.
> I was planning on using Jetty similar to how the collector does. We could
> have some common code that delegates requests to different handlers based on
> the URI. The current telnet interface will remain as-is.
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