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Posted to solr-user@lucene.apache.org by Jeremy Hinegardner <je...@hinegardner.org> on 2008/08/25 17:50:35 UTC

sporadic warnings / errors when using a DataImportHandler based solr instance

Hi all,

I have a system using DataImportHandler, and it is performing great, but we're
getting a couple of sporadic warnings / errors that I'd like to be able to
address.

The version of solr we are using is a nightly snapshot from 2008-08-02.

1) INFO: PERFORMANCE WARNING: Overlapping onDeckSearchers=2

   I doubt this is DataImportMapper related, but it might be related to how we
   do updates / commits.  Can anyone describe the situation that makes this
   performance warning happen?

2) SEVERE: org.apache.solr.common.SolrException: Error opening new searcher.
   exceeded limit of maxWarmingSearchers=4, try again later. 

   My instinct says that this one is related to the first one but i'm not sure.  

3) WARNING: Could not getStatistics on info bean org.apache.solr.search.SolrIndexSearcher
  org.apache.lucene.store.AlreadyClosedException: this IndexReader is closed

  Does this indicate there is a race condition between the info beans and the
  closing of searchers?

enjoy,

-jeremy

-- 
========================================================================
 Jeremy Hinegardner                              jeremy@hinegardner.org

Re: sporadic warnings / errors when using a DataImportHandler based solr instance

Posted by Chris Hostetter <ho...@fucit.org>.
: 1) INFO: PERFORMANCE WARNING: Overlapping onDeckSearchers=2

There's a FAQ on this...
http://wiki.apache.org/solr/FAQ#head-1133543d05c65f889b25b85b3c7aaa17f532032a

...additional info can be found by searching the list archives for 
"PERFORMANCE WARNING"

: 2) SEVERE: org.apache.solr.common.SolrException: Error opening new searcher.
:    exceeded limit of maxWarmingSearchers=4, try again later. 
: 
:    My instinct says that this one is related to the first one but i'm not sure.  

correct, the example solrconfig.xml has a bit more explanation about this.

: 3) WARNING: Could not getStatistics on info bean org.apache.solr.search.SolrIndexSearcher
:   org.apache.lucene.store.AlreadyClosedException: this IndexReader is closed
: 
:   Does this indicate there is a race condition between the info beans and the
:   closing of searchers?

this one i'm not aware of ... it should include a full stack trace, 
can you please post that?  (I suspect you're correct, in which case it's 
not a huge problem, but it would be nice to double check that there's not 
a bug somewhere)



-Hoss