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From zzT <>
Subject SolrCloud : node recovery fails with "No registered leader was found"
Date Wed, 21 May 2014 09:23:03 GMT
SolrCloud configuration contains a single shard and 2 Solr servers, therefore
one acts as a leader and one as a replica.

Through a series of events(*) I've ended up with one Solr server being in
"Active" status and the leader of the shard while the other one in "Recovery
failed" status which cannot recover no matter what. It keeps retrying every
600 sec and logs the following error

ERROR [RecoveryThread] - Error while
trying to recover. core=sample:org.apache.solr.common.SolrException: No
registered leader was found after waiting for 4000ms , collection: sample
slice: shard1

Does anyone have any idea as to why the replica cannot locate the leader?
What is the proposed solution in this case? 

(*) Sorry for not being able to provide more details but if it's of any help
here goes
-> SolrCloud fails to start because of write.lock in index folders
-> Shutdown servers and remove write.lock files
-> Restart Zookeeper ensemble
-> Restart Solr servers

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