Ralph Tice created SOLR-6420:
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Summary: ADDREPLICA can add a replica that reports green without
actually replicating
Key: SOLR-6420
URL: https://issues.apache.org/jira/browse/SOLR-6420
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 4.10
Environment: Ubuntu 14.04
Reporter: Ralph Tice
Priority: Critical
I am running Solr built off branch_4x, and thanks to some help from IRC
([[email protected]]) we've determined that we have an incompatible
index situation where we have indexes built with 4.9 that we can read but not
index into further or update. In this situation, if I try to add a replica,
this also fails, however, the only log ouput (at WARN threshold) is:
16:21:58.156 [RecoveryThread] WARN org.apache.solr.update.PeerSync - no
frame of reference to tell if we've missed updates
...and the replica comes up green. I think this might indicate a missing
integrity check on replication but certainly IMO a replica should report as
green/active if it is not on the same revision as the leader, or at least if it
has never been on the same revision as the leader.
Shards built with the currently running version of Solr are able to
successfully ADDREPLICA as expected.
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