[SOLR-16717] Joining collocated shards

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 9.3
• Assignee: Mikhail Khludnev
• Reporter: Mikhail Khludnev
• Created: 24/Mar/23 15:45
• Updated: 21/Jul/23 20:40
• Resolved: 07/Jul/23 08:03

Description

Context

It's about {!join} query parser and distributed mode.

As is

SOLR-4905 allows to join from single shard collection to many shards collection. 

Challenge

•  Support multiple shards on from side as well,
•  but strictly stick to collocated indices that promise much performance.  

Issue Links

• causes: SOLR-16872 Support split shards in distributed join
• causes: SOLR-16873 Refactor JoinQParsers
• is related to: SOLR-7090 Cross collection join
• is related to: SOLR-13749 Implement support for joining across collections with multiple shards ( XCJF )
• is related to: SOLR-8297 Allow join query over 2 sharded collections: enhance functionality and exception handling
• is related to: SOLR-4905 Allow fromIndex parameter to JoinQParserPlugin to refer to a single-sharded collection that has a replica on all nodes
• links to: GitHub Pull Request #1691
• links to: GitHub Pull Request #1763
• links to: PR