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From Schaum Mallik <>
Subject Re: SolrCoreInitializationException after restart of one solr node
Date Thu, 20 Sep 2018 12:02:11 GMT
Yeah my indexes, read and write works fine on the other two solr nodes.
Since I have this setup running in prod currently what are the steps you
will advice I take to resolve this issue. Starting from scratch is really
not an option since it will involve a huge cost. Is there some workaround
that you guys can suggest.
when you say move the instance dir outside the /op/solr are you suggesting,
modifying this value 'SOLR_HOME'?

Thank you

On Thu, Sep 20, 2018 at 3:00 AM Shawn Heisey <> wrote:

> On 9/19/2018 9:20 PM, Schaum Mallik wrote:
> > The data and index get stored under
> > /opt/solr/server/solr/articles_shard1_replica_n1.
> > The config directory when the collection was created, that time the path
> to
> > the config was given as '/opt/solr/server/solr/configsets/articles'. I
> > didn't use the service installer script. The other two solr nodes are
> > working without any issue. Any ideas how I can resolve this.
> Do your indexes still work after startup, even with those initialization
> errors?  I think there's a good chance that they do.
> This looks to me like what you did was start with a non-cloud install
> that was using the configsets feature, so instanceDir actually WAS in
> configsets, and then converted it to a cloud setup, at which point those
> old cores wouldn't have worked right, so you probably created the
> collections again.  I'm betting that if you moved those instancedirs
> that are under configsets somewhere else (not under /opt/solr at all),
> that everything MIGHT be fine after another restart, based on the fact
> that in the core list I see xxx_shardN_replica_nM cores for articles and
> categories, which would probably be the REAL indexes being used for
> those names.
> Converting from cloud to non-cloud is a process that requires
> understanding exactly how Solr deals with cores at startup, and isn't
> something I would recommend anyone ever try do.  Set your cloud up from
> scratch in cloud mode.  If you're using the configsets feature in
> non-cloud mode, that will confuse things even more.
> Also, I strongly recommend using the service installer script.  It
> creates a much cleaner install that I find much easier to understand.
> The data is entirely separate from the program install.
> Thanks,
> Shawn

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