Kevin Risden updated SOLR-13292:
    Affects Version/s:     (was: 8.x)

> 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: 8.0, master (9.0)
>            Reporter: Andrzej Bialecki 
>            Assignee: Andrzej Bialecki 
>            Priority: Major
>             Fix For: 8.1, master (9.0)
>         Attachments: SOLR-13292.patch, SOLR-13292.patch, adminSegments.json, 
> adminSegments.json, colstatus.json, colstatus.json
> 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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