[SOLR-12214] Leader may skip publish itself as ACTIVE even its last published state is DOWN

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.4
• Assignee: Cao Manh Dat
• Reporter: Cao Manh Dat
• Created: 12/Apr/18 03:21
• Updated: 08/Jun/19 15:12
• Resolved: 09/Oct/18 09:06

Description

Found this problem on beasting LeaderVoteWaitTimeout,

• a replica publish itself as DOWN on RecoveryStrategy.pingLeader()
• It won the election (by vote wait timeout) then skipping publish itself as ACTIVE (by looking into clusterstate, its state still ACTIVE).
• ends up with a leader with DOWN state!

Therefore, replica should look into both clusterstate and its local last published state on skipping publish itself as ACTIVE