[SOLR-11469] LeaderElectionContextKeyTest has flawed logic: 50% of the time it checks the wrong shard's elections

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.2, 8.0
• Assignee: Cao Manh Dat
• Reporter: Chris M. Hostetter
• Created: 11/Oct/17 17:57
• Updated: 02/Oct/19 17:24
• Resolved: 25/Oct/17 02:12

Description

LeaderElectionContextKeyTest is very flaky – and on millers beastit reports it shows a suspiciously close to "50%" failure rate.

Digging into the test i realized that it creates a 2 shard index, then picks "a leader" to kill (arbitrarily) and then asserts that the leader election nodes for shard1 are affected ... so ~50% of the time it kills the shard2 leader and then fails because it doesn't see an election in shard1.

Issue Links

• is broken by: SOLR-5245 Create a test for SOLR-5243.
• is related to: SOLR-11479 Collections API: ADDREPLICA fails if you try to specify property.coreNodeName=foo