[jira] [Created] (SOLR-13292) Provide extended per-segment status of a collection

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

Andrzej Bialecki  created SOLR-13292:
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             Summary: Provide extended per-segment status of a collection
                 Key: SOLR-13292
                 URL: https://issues.apache.org/jira/browse/SOLR-13292
             Project: Solr
          Issue Type: New Feature
      Security Level: Public (Default Security Level. Issues are Public)
    Affects Versions: master (9.0), 8x
            Reporter: Andrzej Bialecki 
            Assignee: Andrzej Bialecki 


When changing a collection configuration or schema there may be non-obvious conflicts between existing data and the new configuration or the newly declared schema. A similar situation arises when upgrading Solr to a new version while keeping the existing data.

Currently the {{SegmentsInfoRequestHandler}} provides insufficient information to detect such conflicts. Also, there's no collection-wide command to gather such status from all shard leaders.

This issue proposes extending the {{/admin/segments}} handler to provide more low-level Lucene details about the segments, including potential conflicts between existing segments' data and the current declared schema. It also adds a new COLSTATUS collection command to report an aggregated status from all shards, and optionally for all collections.




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