Varun Thacker created SOLR-6238:
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             Summary: Specialized test case for leader recovery scenario
                 Key: SOLR-6238
                 URL: https://issues.apache.org/jira/browse/SOLR-6238
             Project: Solr
          Issue Type: Improvement
            Reporter: Varun Thacker
            Priority: Minor
             Fix For: 4.10


A scenario which could happen at least before the addition of 
LeaderInitiatedRecoveryThread I think. Also this can happen only if one is 
using a non cloud aware client ( which might be quite a few users ) given that 
we have only SolrJ

Events are in chronological order -
Leader -> Lost Connection with ZK
Replica -> Became leader
Leader -> add document is successful. Forwards it to the replica
Replica -> add document is unsuccessful as it is the leader and the request 
says it is coming from a leader

So as of now the the Replica(new leader) won't have the doc but the leader(old 
leader) will have the document.



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