[SOLR-7461] StatsComponent, calcdistinct, ability to disable distinctValues while keeping countDistinct

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.2, 6.0
• Labels: statscomponent
• Assignee: Chris M. Hostetter
• Reporter: James Andres
• Created: 24/Apr/15 13:54
• Updated: 09/May/16 18:55
• Resolved: 08/May/15 21:44

Description

When using calcdistinct with large amounts of data the distinctValues field can be extremely large. In cases where the countDistinct is only required it would be helpful if the server did not return distinctValues in the response.

I'm no expert, but here are some ideas for how the syntax could look.

# Both countDistinct and distinctValues are returned, along with all other stats
stats.calcdistinct=true&stats.field=myfield

# Only countDistinct and distinctValues are returned
stats.calcdistinct=true&stats.field={!countDistinct=true distinctValues=true}myfield

# Only countDistinct is returned
stats.calcdistinct=true&stats.field={!countDistinct=true}myfield

# Only distinctValues is returned
stats.calcdistinct=true&stats.field={!distinctValues=true}myfield

Issue Links

• relates to: SOLR-6349 LocalParams for enabling/disabling individual stats
• relates to: SOLR-6968 add hyperloglog in statscomponent as an approximate count