[jira] [Created] (SOLR-14837) prometheus-exporter: different metrics ports publishes mixed metrics

["Fadi Mohsen (Jira)" <ji...@apache.org>]

Fadi Mohsen created SOLR-14837:
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             Summary: prometheus-exporter: different metrics ports publishes mixed metrics
                 Key: SOLR-14837
                 URL: https://issues.apache.org/jira/browse/SOLR-14837
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Fadi Mohsen


when calling SolrExporter.main "pro-grammatically"/"same JVM" with two different solr masters asking to publish the metrics on two different ports, the metrics are being mixed on both metric endpoints from the two solr masters.

This was tracked down to a static variable called *defaultRegistry*:
https://github.com/apache/lucene-solr/blob/master/solr/contrib/prometheus-exporter/src/java/org/apache/solr/prometheus/exporter/SolrExporter.java#L86

removing the static keyword fixes the issue.



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