[SOLR-8371] Try and prevent too many recovery requests from stacking up and clean up some faulty logic.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.5, 6.0
• Component/s: SolrCloud
• Assignee: Mark Miller
• Reporter: Mark Miller
• Created: 04/Dec/15 16:49
• Updated: 19/Apr/17 21:00
• Resolved: 28/Jan/16 14:05

Issue Links

• is blocked by: SOLR-8702 Improve our strategy for preventing recovery requests from stacking up.
• is related to: SOLR-6056 Zookeeper crash JVM stack OOM because of recover strategy
• is related to: SOLR-10525 Stacked recovery requests do no cancel an in progress recovery first.
• is related to: SOLR-8279 Add a new test fault injection approach and a new SolrCloud test that stops and starts the cluster while indexing data and with random faults.
• relates to: SOLR-7033 RecoveryStrategy should not publish any state when closed / cancelled.
• relates to: SOLR-4254 Harden the 'leader requests replica to recover' code path.