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Posted to dev@lucene.apache.org by "Andrzej Bialecki (JIRA)" <ji...@apache.org> on 2018/06/07 12:28:00 UTC
[jira] [Comment Edited] (SOLR-12438) Improve status reporting of
metrics history API
[ https://issues.apache.org/jira/browse/SOLR-12438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16504596#comment-16504596 ]
Andrzej Bialecki edited comment on SOLR-12438 at 6/7/18 12:27 PM:
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Updated patch with fixes for the serialization bug and Ref Guide changes to show the correct outputs.
was (Author: ab):
Updated patch with fixes for the serialization bug.
> Improve status reporting of metrics history API
> -----------------------------------------------
>
> Key: SOLR-12438
> URL: https://issues.apache.org/jira/browse/SOLR-12438
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: metrics
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Priority: Major
> Fix For: 7.4, master (8.0)
>
> Attachments: SOLR-12438.patch, SOLR-12438.patch
>
>
> In an offline conversation with [~janhoy] we identified the following areas of improvement to the metrics history API in order to increase its user-friendliness and provide more details about its status.
>
> * there are three possible states for the API: inactive (when not in cloud mode), in-memory only (when {{.system}} collection doesn’t exist), and persisted when it’s both active and persisted in Solr. The /admin/metrics/history endpoint should give some hint about this status, such as "mode":"memory/index", "active": true|false. Or a separate action=status just to poll status? Currently when the API is inactive it simply returns 404 Not Found.
> * when in "memory" mode a call to /admin/metrics/history on a non-overseer node should forward the request to the overseer, so that the client does not need to care what mode it is in - kind of like how a query works in distributed mode.
> * better documentation for the API behavior in each mode.
> * perhaps if mode=memory, there could also be a "message":"Warning, metrics history is not being persisted. Please create the .system collection to start persisting history"
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