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From "Andy Twidle (JIRA)" <j...@apache.org>
Subject [Lucene.Net] [jira] [Created] (LUCENENET-442) ParallelMultiSearcher threads don't handle all exceptions
Date Mon, 05 Sep 2011 14:24:10 GMT
ParallelMultiSearcher threads don't handle all exceptions
---------------------------------------------------------

                 Key: LUCENENET-442
                 URL: https://issues.apache.org/jira/browse/LUCENENET-442
             Project: Lucene.Net
          Issue Type: Bug
          Components: Lucene.Net Core
    Affects Versions: Lucene.Net 2.9.2
            Reporter: Andy Twidle


The ParallelMultiSearcher doesn't allow non-IOException exceptions to be managed by the calling
application.  

LUCENENET-388 worked around one specific example of this, but any genuine Lucene exception
(eg: BooleanQuery.TooManyClauses) will also fall foul of this pattern.

In our specific instance we could treat the symptoms and up the max clause count, but I'm
sure there will be more.  Could the System.IOException be generalised to System.Exception?
 Or would that be too much deviation from the Java code base?

--

Example stack trace of an exception thrown by a Searcher executed:

Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: Lucene.Net.Search.BooleanQuery+TooManyClauses
Stack:
   at Lucene.Net.Search.BooleanQuery.Add(Lucene.Net.Search.BooleanClause)
   at Lucene.Net.Search.BooleanQuery.Add(Lucene.Net.Search.Query, Occur)
   at Lucene.Net.Search.PrefixQuery.Rewrite(Lucene.Net.Index.IndexReader)
   at Lucene.Net.Search.BooleanQuery.Rewrite(Lucene.Net.Index.IndexReader)
   at Lucene.Net.Search.IndexSearcher.Rewrite(Lucene.Net.Search.Query)
   at Lucene.Net.Search.Query.Weight(Lucene.Net.Search.Searcher)
   at Lucene.Net.Search.Searcher.CreateWeight(Lucene.Net.Search.Query)
   at Lucene.Net.Search.Searcher.Search(Lucene.Net.Search.Query, Lucene.Net.Search.Filter,
Lucene.Net.Search.HitCollector)
   at Lucene.Net.Search.Searcher.Search(Lucene.Net.Search.Query, Lucene.Net.Search.HitCollector)
   at Lucene.Net.Search.QueryWrapperFilter.Bits(Lucene.Net.Index.IndexReader)
   at Lucene.Net.Search.CachingWrapperFilter.Bits(Lucene.Net.Index.IndexReader)
   at Lucene.Net.Search.IndexSearcher.Search(Lucene.Net.Search.Weight, Lucene.Net.Search.Filter,
Lucene.Net.Search.HitCollector)
   at Lucene.Net.Search.IndexSearcher.Search(Lucene.Net.Search.Weight, Lucene.Net.Search.Filter,
Int32)
   at Lucene.Net.Search.MultiSearcherThread.Run()
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback,
System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback,
System.Object)
   at System.Threading.ThreadHelper.ThreadStart()


--
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