Is this a huge index? Keep in mind that most spellchecker implementations
rebuild the index which can stall the entire process if there are millions of
full text documents to process.
There is a new implementation called DirectSolrSpellchecker that doens't so a
complete rebuild but i haven't tried it yet but should work with the
SuggesterComonent. It's still experimental though.
> We have a separate Java process indexing to Solr using SolrJ. We are
> using Solr 3.4.0, and Jetty version 8.0.1.v20110908. We experienced
> Solr hanging today. For a period of approximately 10 minutes, it did
> not respond to queries. Our indexer sends a query to build a
> spellcheck index after committing once it's added all new documents
> (because we have auto-commits that we don't want to trigger rebuilding
> the spellcheck, we don't use buildOnCommit), and then sends a query to
> build the suggest component index. We see this from the Solr log
> during the period it was hung (we attempted to send several queries
> during this time, but they do not appear in the log, or appear after
> waiting for several minutes):
>
> 2011-09-28 13:18:03,217 [qtp10884088-13] INFO
> org.apache.solr.core.SolrCore - [report] webapp= path=/select
> params={spellcheck=true&qt=dismax&wt=javabin&rows=0&spellcheck.build=true&v
> ersion=2} hits=98772 status=0 QTime=173594
> 2011-09-28 13:28:18,857 [qtp10884088-89] INFO
> org.apache.solr.spelling.suggest.Suggester - build()
> ...
> 2011-09-28 13:29:02,873 [qtp10884088-89] INFO
> org.apache.solr.core.SolrCore - [report] webapp= path=/suggest
> params={spellcheck=true&qt=/suggest&wt=javabin&spellcheck.build=true&versio
> n=2} status=0 QTime=44016
>
> In our indexer log, we see just after this (13:28:19,217) the call to
> build our suggestion index (which comes right after building the
> spellcheck index) times out and throws a NoHttpResponseException: The
> server localhost failed to respond.
>
> Any ideas? Anything else we should look at to help diagnose?
> ---
> Stephen Duncan Jr
> www.stephenduncanjr.com
