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From "Cassandra Targett (JIRA)" <>
Subject [jira] [Assigned] (SOLR-10509) Document changes in SOLR-10418
Date Fri, 02 Jun 2017 17:51:04 GMT


Cassandra Targett reassigned SOLR-10509:

    Assignee: Cassandra Targett

> Document changes in SOLR-10418
> ------------------------------
>                 Key: SOLR-10509
>                 URL:
>             Project: Solr
>          Issue Type: Task
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: documentation
>    Affects Versions: master (7.0)
>            Reporter: Andrzej Bialecki 
>            Assignee: Cassandra Targett
> SOLR-10418 added system properties to the metrics API, together with some other changes
that should be documented:
> * {{solr.jvm}} metrics group now contains a compound metric (ie. a metric that has several
mixed-type properties) named {{}}. This metric exposes most of key/value
pairs from {{System.getProperties()}}, except for some properties that are considered sensitive.
> * a new optional element {{/metrics/hiddenSysProps}} is now supported in {{solr.xml}}
config file. It can be used for declaring what system properties are considered sensitive
and should not be exposed via metrics API. If this element is absent a default list of hidden
properties is used, equivalent to the following configuration:
> {code}
> <solr>
> ...
>   <metrics>
>     <hiddenSysProps>
>       <str></str>
>       <str></str>
>       <str>basicauth</str>
>       <str>zkDigestPassword</str>
>       <str>zkDigestReadonlyPassword</str>
>     </hiddenSysProps>
>     ...
>   </metrics>
> </solr>
> {code}
> * {{/admin/metrics}} handler now supports a {{property}} parameter that can be used for
selecting a specific property from a compound metric. Multiple {{property}} parameters can
be specified, which will act as a logical OR. For example, parameters {{}}
would return just the two specified system properties. This property selection mechanism works
also for other types of metrics that have multiple properties (eg. timers, meters, histograms,
etc), for example {{property=p99&property=p99_ms}} will return only the 99-th percentile
value from all selected histograms and timers.

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