[KUDU-2274] Race when tombstoned replica gets copied and becomes leader

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.0
• Fix Version/s: 1.7.0
• Component/s: consensus
• Code Review: https://gerrit.cloudera.org/c/9246/
• Assignee: Mike Percy
• Reporter: Mike Percy
• Created: 30/Jan/18 02:58
• Updated: 12/Feb/18 23:42
• Resolved: 12/Feb/18 23:41

Description

It appears that there is a race where there can be an interleaving when writing to consensus metadata between a tombstoned TabletReplica instance and a newly tablet copied TabletReplica instance. This bug stems from not calling tablet_replica_->Shutdown() on the tombstoned replica when replacing such a replica.