I recommend you to attach your log to the issue and commend the process that 
you did to run in this error. Maybe your logs can have some valuable 
information.


--  
Yago Riveiro
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)


On Thursday, February 27, 2014 at 12:03 PM, Yago Riveiro wrote:

> I remember tat I need to empty my queue before restart the cluster too.
>  
> This bug is a little scary because if you have a schedule system to deletes 
> collections on the fly your cluster can blow and you don't know why …
>  
> --  
> Yago Riveiro
> Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
>  
>  
> On Thursday, February 27, 2014 at 11:58 AM, Oliver Schrenk wrote:
>  
> > Interesting. I deleted all old collections, configs, and clusterstate.json 
> > from Zookeeper and I still had that problem.
> >  
> > I’m quite new to Zookeeper, so some of what I say might be wrong. It seems 
> > there were some outstanding changes in Zookeeper. Or at least I found some 
> > queue items in a queue node. I deleted all of them and was able to start my 
> > cluster.
> >  
> >  
> > On 27 Feb 2014, at 12:48, Yago Riveiro <yago.rive...@gmail.com 
> > (mailto:yago.rive...@gmail.com)> wrote:
> >  
> > > I had some problems with DELETE action too.  
> > >  
> > > I reported this some time ago 
> > > https://issues.apache.org/jira/browse/SOLR-5559
> > >  
> > > The overseer fail to delete a collection and the solr cluster becomes 
> > > unstable, I reloaded my boxes and my cluster never went online.
> > >  
> > > After some debug, I found some shard folder with the name of the 
> > > collection that I was delete previously. I deleted it and the cluster 
> > > went online again.
> > >  
> > > You will need to remove all entries of deleted collection manually on 
> > > clusterstate.json (if exists any).  
> > >  
> > >  
> > > --  
> > > Yago Riveiro
> > > Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
> > >  
> > >  
> > > On Thursday, February 27, 2014 at 10:42 AM, Oliver Schrenk wrote:
> > >  
> > > > Hi,
> > > >  
> > > > Upgraded a small cluster from 4.3.1 to 4.7 in Solr Cloud mode.
> > > >  
> > > > I deleted the old data, replaced the solr.xml with the example solr.xml 
> > > > with auto-discovery, but it seems there is still some old data 
> > > > somewhere, probably in Zookeeper that keep my machine from starting.
> > > >  
> > > > It loops over the same log message over and over
> > > >  
> > > > 2014-02-27 11:00:49,011 INFO o.a.s.c.c.ZkStateReader [Thread-15] 
> > > > Updating cloud state from ZooKeeper... 2014-02-27 11:00:49,012 INFO 
> > > > o.a.s.c.Overseer$ClusterStateUpdater [Thread-15] Removing collection: 
> > > > collection1 shard: 2 from clusterstate 2014-02-27 11:00:49,012 ERROR 
> > > > o.a.s.c.Overseer$ClusterStateUpdater [Thread-15] Exception in Overseer 
> > > > main queue loop org.apache.solr.common.SolrException: Could not find 
> > > > collection:collection1 at 
> > > > org.apache.solr.common.cloud.ClusterState.getCollection(ClusterState.java:175)
> > > >  at 
> > > > org.apache.solr.cloud.Overseer$ClusterStateUpdater.removeShard(Overseer.java:801)
> > > >  at 
> > > > org.apache.solr.cloud.Overseer$ClusterStateUpdater.processMessage(Overseer.java:230)
> > > >  at 
> > > > org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:187)
> > > >  at java.lang.Thread.run(Thread.java:722)
> > > >  
> > > > How can I delete that false information?
> > > >  
> > > > Regards
> > > > Oliver
> > > >  
> > >  
> > >  
> >  
> >  
> >  
> >  
>  
>  

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