[SOLR-6532] Possibility to return an error immediately from ping handler if no searcher is available

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 4.10
• Component/s: search
• Labels: difficulty-easy impact-low

Environment

Load-balanced service

• Assignee: Unassigned
• Reporter: Ere Maijala
• Created: 18/Sep/14 09:55
• Updated: 14/Oct/14 22:35

Description

Especially in a load-balanced environment it would be useful if it was possible to configure PingRequestHandler to return right away with an error status when a searcher is not (yet) available. This would allow the load-balancer to quickly fail over to a Solr instance that's able to serve the requests.

Currently the ping handler waits for the searcher to become available, which means the load-balancer has to either keep waiting or use a suitably short timeout, which is difficult to define in a way that provides a timely failover without false negatives.