[jira] [Created] (SOLR-11779) Basic long-term collection of aggregated metrics

["Andrzej Bialecki (JIRA)" <ji...@apache.org>]

Andrzej Bialecki  created SOLR-11779:
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             Summary: Basic long-term collection of aggregated metrics
                 Key: SOLR-11779
                 URL: https://issues.apache.org/jira/browse/SOLR-11779
             Project: Solr
          Issue Type: New Feature
      Security Level: Public (Default Security Level. Issues are Public)
          Components: metrics
    Affects Versions: master (8.0), 7.3
            Reporter: Andrzej Bialecki 
            Assignee: Andrzej Bialecki 


Tracking the key metrics over time is very helpful in understanding the cluster and user behavior.

Currently even basic metrics tracking requires setting up an external system and either polling {{/admin/metrics}} or using {{SolrMetricReporter}}-s. The advantage of this setup is that these external tools usually provide a lot of sophisticated functionality. The downside is that they don't ship out of the box with Solr and require additional admin effort to set up.

Solr could collect some of the key metrics and keep their historical values in a round-robin database (eg. using RRD4j) to keep the size of the historic data constant (eg. ~64kB per metric), but at the same providing out of the box useful insights into the basic system behavior over time. This data could be persisted to the {{.system}} collection as blobs, and it could be also presented in the Admin UI as graphs.



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