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https://issues.apache.org/jira/browse/SOLR-3330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan McKinley updated SOLR-3330:
--------------------------------
Attachment: SOLR-3330-pluggins-diff.patch
This is a quick sketch showing how we can use the SolrInfoMBeanHandler to
output a speciall 'diff' format that will load (without changes!) in the
current UI.
Essentially the workflow is:
1. The UI takes a snapshot of a plugins response (needs to be XML string)
2. At some point in the future, you send a post to
/admin/plugins?diff=true&stream.body=XML
3. The handler returns a modified response that only includes changed MBeans
and makes the differences clear.
For example, the stats response after one request will look like this:
{code:xml}
<lst name="stats">
<long name="handlerStart">1333695069323</long>
<str name="requests">Was: 2, Now: 3, Delta: 1</str>
<long name="errors">0</long>
<long name="timeouts">0</long>
<str name="totalTime">Was: 3, Now: 4, Delta: 1</str>
<str name="avgTimePerRequest">Was: 1.5, Now: 1.3333334, Delta: -0.167</str>
</lst>
{code}
> Show changes in plugin statistics across multiple requests
> ----------------------------------------------------------
>
> Key: SOLR-3330
> URL: https://issues.apache.org/jira/browse/SOLR-3330
> Project: Solr
> Issue Type: New Feature
> Components: web gui
> Reporter: Ryan McKinley
> Fix For: 4.0
>
> Attachments: SOLR-3330-pluggins-diff.patch
>
>
> When debugging configuration and performance, I often:
> 1. Look at stats values
> 2. run some queries
> 3. See how the stats values changed
> This is fine, but is often a bit clunky and you have to really know what you
> are looking for to see any changes.
> It would be great if the 'plugins' page had a button that would make this
> easier
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