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From Shawn Heisey <apa...@elyograg.org>
Subject Re: No live SolrServers available to handle this request
Date Sat, 19 Mar 2016 17:04:25 GMT
On 3/18/2016 9:55 PM, Anil wrote:
> Thanks for your response.
> CDH is a Cloudera (third party) distribution. is there any to get the
> notifications copy of it when cluster state changed ? in logs ?
>
> I can assume that the exception is result of no availability of replicas
> only. Agree?

Yes, I think that Solr believes there are no replicas for at least one
shard.  As for why it believes that, I cannot say.

If Solr logged every single thing that happened where zookeeper (or even
just the clusterstate) is involved, you'd be drowning in logs.  Much
more than already happens.  The logfile is already very verbose.

Chances are that at least one of your Solr nodes *did* log something
related to a problem with that collection before you got the error
you're asking about.

The "No live SolrServers" error is one that people are seeing quite
frequently.  There may be some instances where Solr isn't behaving
correctly, but I think when this happens, it usually indicates there's a
real problem of some kind.

To troubleshoot, we'll need to see any errors or warnings you find in
your Solr logfiles from the time before you get an error on a request. 
You'll need to check the logfile on all Solr nodes.

It might be a good idea to also involve Cloudera support, see what they
think.

Thanks,
Shawn


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