[SOLR-8268] Makes StatsStream implement Expressible interface

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Implemented
• Affects Version/s: 6.0
• Fix Version/s: 6.0
• Component/s: SolrJ
• Labels: Streaming
• Assignee: Dennis Gove
• Reporter: Dennis Gove
• Created: 10/Nov/15 13:12
• Updated: 09/May/16 18:47
• Resolved: 11/Nov/15 00:51

Description

Adds expression support to the Stats stream. With this it will now be possible to express an stats stream as

stats(
  collection1, q=*:*, fl="fieldA,fieldB,fieldInt,fieldFloat",
  sum(fieldInt), 
  sum(fieldFloat), 
  min(fieldInt), 
  min(fieldFloat), 
  max(fieldInt), 
  max(fieldFloat), 
  avg(fieldInt), 
  avg(fieldFloat), 
  count(*)
)

You can collect stats on any supported metric and use full metric features. Ie, when SOLR-8185 is committed you can then include operations in the metrics.

Issue Links

• is related to: SOLR-8125 Umbrella ticket for Streaming and SQL issues
• relates to: SOLR-8038 Add StatsStream to the Streaming API and wire it into the SQLHandler