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https://issues.apache.org/jira/browse/SOLR-3083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan McKinley resolved SOLR-3083.
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Resolution: Fixed
Fix Version/s: 4.0
added in r1335147
thanks for the test cases!
> all JMX Mbeans are identified as java.lang.String even if numeric
> -----------------------------------------------------------------
>
> Key: SOLR-3083
> URL: https://issues.apache.org/jira/browse/SOLR-3083
> Project: Solr
> Issue Type: Bug
> Components: SearchComponents - other
> Affects Versions: 4.0
> Reporter: Tagged Siteops
> Assignee: Ryan McKinley
> Priority: Minor
> Labels: interoperability,, jmx, monitoring, statistics
> Fix For: 4.0
>
> Attachments:
> SOLR-3083-Made-JMX-Mbean-information-use-numeric-typ.patch, Screen shot
> 2012-01-31 at 2.19.06 PM.png
>
>
> When trying to monitor our Solr instances with JMXtrans
> (https://github.com/lookfirst/jmxtrans), we discovered that all the Mbeans
> were identifying themselves as java.lang.String. This breaks the
> GangliaWriter in JMXtrans because the software decides it's a string instead
> of a numeric values and you can't graph a string. Other software we are
> monitoring with JMXtrans (e.g. Kafka) correctly identify their numeric values
> as numbers (doubles in this case).
> For example, avgTimePerRequest in Solr is identified as a string which makes
> no sense. This behavior makes Solr less interoperable with the rest of the
> Java ecosystem.
> The problem code is in JmxMonitoredMap.java
> NamedList dynamicStats = infoBean.getStatistics();
> if (dynamicStats != null) {
> for (int i = 0; i < dynamicStats.size(); i++) {
> String name = dynamicStats.getName(i);
> if (!staticStats.contains(name))
> attrInfoList.add(new MBeanAttributeInfo(dynamicStats.getName(i),
> String.class.getName(), null, true, false, false));
> }
> I will try to attach a screenshot.
> Thanks for Solr! We use the heck out of it, it's awesome.
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