[SOLR-8556] Add ConcatOperation to be used with the SelectStream

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Implemented
• Fix Version/s: 6.0
• Assignee: Dennis Gove
• Reporter: Joel Bernstein
• Created: 15/Jan/16 12:43
• Updated: 09/May/16 18:44
• Resolved: 20/Jan/16 18:10

Description

Now that we have the UpdateStream it would be nice to support the use case of sending rolled up aggregates for storage in another SolrCloud collection. To support this we'll need to create id's for the aggregate records.

The ConcatOperation would allows us to concatenate the bucket values into a unique id. For example:

update(
            select( 
                         rollup(search(q="*:*, fl="a,b,c", ...)), 
                         concat(fields="a,b,c", delim="_",  as="id")))

Issue Links

• is depended upon by: SOLR-8571 Wire the ConcatOperation into the SQLhandler
• is related to: SOLR-8125 Umbrella ticket for Streaming and SQL issues