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From Shawn Heisey <>
Subject Re: Solr 7.1.0 - concurrent.ExecutionException building model
Date Mon, 02 Apr 2018 23:09:17 GMT
On 4/2/2018 1:55 PM, Joe Obernberger wrote:
> The training data was split across 20 shards - specifically created with:
> Any ideas?  The complete error is:
> <body><h2>HTTP ERROR 404</h2>
> <p>Problem accessing
> /solr/MODEL1024_1522696624083_shard20_replica_n75/select. Reason:
> <pre>    Not Found</pre></p>
> </body>

I'll warn you in advance that I know nothing at all about the learning
to rank functionality.  I'm replying about the underlying error you're
getting, independent of what your query is trying to accomplish.

It's a 404 error, trying to access the URL mentioned above.

The error doesn't indicate exactly WHAT wasn't found.  It could either
be the core named "MODEL1024_1522696624083_shard20_replica_n75" or the
"/select" handler on that core.  That's something you need to figure
out.  It could be that the core *does* exist, but for some reason, Solr
on that machine was unable to start it.

The solr.log file on the Solr instance that returned the error (which
seems to be on the machine named vesta, answering to port 9100) may have
more detail for the error, or some additional error messages.

Normally SolrCloud is good at making sure that requests aren't sent to
resources that aren't working.  So I'm not sure why this happened.

Are there other errors or warnings in the solr.log file, either on the
instance where you sent your request, or the instance that returned the
404 error?


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