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https://issues.apache.org/jira/browse/SOLR-7021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15316424#comment-15316424
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Forest Soup commented on SOLR-7021:
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Is there any plan to fix this? We found same log in v5.3.2 solrcloud.
> Leader will not publish core as active without recovering first, but never
> recovers
> -----------------------------------------------------------------------------------
>
> Key: SOLR-7021
> URL: https://issues.apache.org/jira/browse/SOLR-7021
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 4.10
> Reporter: James Hardwick
> Priority: Critical
> Labels: recovery, solrcloud, zookeeper
>
> A little background: 1 core solr-cloud cluster across 3 nodes, each with its
> own shard and each shard with a single replica hence each replica is itself a
> leader.
> For reasons we won't get into, we witnessed a shard go down in our cluster.
> We restarted the cluster but our core/shards still did not come back up.
> After inspecting the logs, we found this:
> {code}
> 015-01-21 15:51:56,494 [coreZkRegister-1-thread-2] INFO cloud.ZkController
> - We are http://xxx.xxx.xxx.35:8081/solr/xyzcore/ and leader is
> http://xxx.xxx.xxx.35:8081/solr/xyzcore/
> 2015-01-21 15:51:56,496 [coreZkRegister-1-thread-2] INFO cloud.ZkController
> - No LogReplay needed for core=xyzcore baseURL=http://xxx.xxx.xxx.35:8081/solr
> 2015-01-21 15:51:56,496 [coreZkRegister-1-thread-2] INFO cloud.ZkController
> - I am the leader, no recovery necessary
> 2015-01-21 15:51:56,496 [coreZkRegister-1-thread-2] INFO cloud.ZkController
> - publishing core=xyzcore state=active collection=xyzcore
> 2015-01-21 15:51:56,497 [coreZkRegister-1-thread-2] INFO cloud.ZkController
> - numShards not found on descriptor - reading it from system property
> 2015-01-21 15:51:56,498 [coreZkRegister-1-thread-2] INFO cloud.ZkController
> - publishing core=xyzcore state=down collection=xyzcore
> 2015-01-21 15:51:56,498 [coreZkRegister-1-thread-2] INFO cloud.ZkController
> - numShards not found on descriptor - reading it from system property
> 2015-01-21 15:51:56,501 [coreZkRegister-1-thread-2] ERROR core.ZkContainer -
> :org.apache.solr.common.SolrException: Cannot publish state of core 'xyzcore'
> as active without recovering first!
> at org.apache.solr.cloud.ZkController.publish(ZkController.java:1075)
> {code}
> And at this point the necessary shards never recover correctly and hence our
> core never returns to a functional state.
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