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From "Hoss Man (JIRA)" <>
Subject [jira] Commented: (SOLR-1101) expose extra statistics like slow queries
Date Wed, 08 Apr 2009 05:55:12 GMT


Hoss Man commented on SOLR-1101:

bq. A simple string may not be quite sufficient

sure ... no disagreement.

my point is that instead of a marker interface that the components implement (which would
only allow one level of drill down) the marker interface could be on new objects put into
the NamedList returned by the existing getStatistics() method -- when that interface is detected,
show getLabel(), otherwise show toString().

the extended display (extrastats.jsp if you want, or some new option on stats.jsp) would be
able to getDetails() on the object ... and any of those details might themselves implement
StatsDetails to allow further drilldown.

> expose extra statistics like slow queries 
> ------------------------------------------
>                 Key: SOLR-1101
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: web gui
>            Reporter: Noble Paul
>             Fix For: 1.5
> Solr Objects may want to expose extra information for diagnostics etc. These information
can be large and we may not wish to show it in the stats page which can make it unwieldly.
I propose an extension of the stats itself which can be shown separately. 
> I wish to implement slow queries as a part of this.  There is a new interface which can
be implemented by components
> {code:java}
> public interface StatsDetails {
> public interface StatsDetails {
>   /**The details info is a Map of details name versus description. The details name must
>    * return the details when the getDetails() method is invoked on the same object.
>    * @return a map of details name vs the description. the description may be used in
a link text
>    */
>   public Map<String ,String> getDetailsInfo();
>   /**The details key should be known for this Object . 
>    * This key will may be obj=tained by invoking getDetailsInfo() 
>    * 
>    * @param detailsCommand
>    * @return
>    */
>   public NamedList getDetails(String detailsCommand);
> }
> {code}
> The stats.jsp can be enhanced to show these extra links .

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