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From Emir Arnautović <emir.arnauto...@sematext.com>
Subject Re: Error adding replica after a delete replica
Date Fri, 06 Oct 2017 07:44:06 GMT
Hi,
How did you delete replica? Did you see any errors in logs after deleting? How did/does it
look from ZK perspective after deleting that replica?

Thanks,
Emir
--
Monitoring - Log Management - Alerting - Anomaly Detection
Solr & Elasticsearch Consulting Support Training - http://sematext.com/



> On 5 Oct 2017, at 16:17, Webster Homer <webster.homer@sial.com> wrote:
> 
> A colleague of mine was testing how solrcloud replica recovery works. We
> have had a lot of issues with replicas going into recovery mode, replicas
> down and in recovery failed states.  So to test, he deleted a healthy
> replica in one of our development. First the delete operation timed out,
> but the replica appears to be gone. However, addReplica always fails with
> this error:
> 
> Error CREATEing SolrCore 'sial-content-citations_shard1_replica1': Unable
> to create core [sial-content-citations_shard1_replica1] Caused by: Lock
> held by this virtual machine: /var/solr/data/sial-content-
> citations_shard1_replica1/data/index/write.lock
> 
> This cloud has 4 nodes. The collection has two shards with two replicas per
> shard. They are all hosted in a google cloud environment.
> 
> So if the delete deleted the replica why would it then hold a lock? We want
> to understand this.
> 
> We are using Solr 6.2.0
> 
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