ParallelMultiSearcher threads don't handle all exceptions
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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?
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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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