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From Otis Gospodnetic <otis_gospodne...@yahoo.com>
Subject 2 exceptions
Date Fri, 08 Mar 2002 17:40:54 GMT
Hello,

Do these 2 exceptions look familiar to anyone:


java.lang.ArrayIndexOutOfBoundsException: 111
	at java.util.Vector.elementAt(Vector.java(Compiled Code))
	at org.apache.lucene.index.FieldInfos.fieldInfo(FieldInfos.java:136)
	at org.apache.lucene.index.FieldInfos.fieldName(FieldInfos.java:132)
	at
org.apache.lucene.index.SegmentTermEnum.readTerm(SegmentTermEnum.java:134)
	at
org.apache.lucene.index.SegmentTermEnum.next(SegmentTermEnum.java:114)
	at
org.apache.lucene.index.TermInfosReader.scanEnum(TermInfosReader.java:166)
	at
org.apache.lucene.index.TermInfosReader.get(TermInfosReader.java:156)
	at
org.apache.lucene.index.SegmentReader.docFreq(SegmentReader.java:205)
	at
org.apache.lucene.search.IndexSearcher.docFreq(IndexSearcher.java:91)
	at org.apache.lucene.search.Similarity.idf(Similarity.java:104)
	at
org.apache.lucene.search.TermQuery.sumOfSquaredWeights(TermQuery.java:76)
	at
org.apache.lucene.search.BooleanQuery.sumOfSquaredWeights(BooleanQuery.java:105)
	at org.apache.lucene.search.Query.scorer(Query.java:91)
	at
org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:105)
	at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:91)
	at org.apache.lucene.search.Hits.<init>(Hits.java:81)
	at org.apache.lucene.search.Searcher.search(Searcher.java:75)
	at org.apache.lucene.search.Searcher.search(Searcher.java:69)


The second exception that I am getting is this:

java.io.IOException: Interrupted system call
	at java.io.RandomAccessFile.seek(Native Method)
	at
org.apache.lucene.store.FSInputStream.readInternal(FSDirectory.java:271)
	at org.apache.lucene.store.InputStream.refill(InputStream.java:166)
	at
org.apache.lucene.store.InputStream.readVInt(InputStream.java(Compiled
Code))
	at
org.apache.lucene.store.InputStream.readVInt(InputStream.java(Compiled
Code))
	at
org.apache.lucene.index.SegmentTermEnum.readTerm(SegmentTermEnum.java:127)
	at
org.apache.lucene.index.SegmentTermEnum.next(SegmentTermEnum.java:114)
	at
org.apache.lucene.index.TermInfosReader.scanEnum(TermInfosReader.java:166)
	at
org.apache.lucene.index.TermInfosReader.get(TermInfosReader.java:161)
	at
org.apache.lucene.index.SegmentReader.docFreq(SegmentReader.java:205)
	at
org.apache.lucene.search.IndexSearcher.docFreq(IndexSearcher.java:91)
	at org.apache.lucene.search.Similarity.idf(Similarity.java:104)
	at
org.apache.lucene.search.TermQuery.sumOfSquaredWeights(TermQuery.java:76)
	at
org.apache.lucene.search.BooleanQuery.sumOfSquaredWeights(BooleanQuery.java:105)
	at org.apache.lucene.search.Query.scorer(Query.java:91)
	at
org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:105)
	at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:91)
	at org.apache.lucene.search.Hits.<init>(Hits.java:81)
	at org.apache.lucene.search.Searcher.search(Searcher.java:75)
	at org.apache.lucene.search.Searcher.search(Searcher.java:69)


Any search I make in a multi-threaded environment seems to fail withone
of these exceptions.
The search code in use looks like this:

try
{
    // if the index has been modified since opened, re-open it.
    if (IndexReader.lastModified(_paIndexDir) >= _paIndexLastMod)
    {
	_paIndexLastMod  = new Date().getTime();
	if (_paIndexSearcher != null)
	    _paIndexSearcher.close();
	_paIndexLastMod  = new Date().getTime();
    }
    if (_paIndexSearcher == null)
	_paIndexSearcher = new IndexSearcher(_paIndexDir);
}
catch (IOException e)
{
    _log.error("Could not open/close IndexSearcher: " +
e.getMessage());
    return;
}

Query query = null;
Hits  hits  = null;
try {
    query = MultiFieldQueryParser.parse(queryString, new String[]
{"title", "description"}, _analyzer);
    hits = _paIndexSearcher.search(query);
} catch (ParseException e) {
    _log.warn("QueryParser threw ParseException while parsing: " +
		queryString, e);
} catch (TokenMgrError e) {
    _log.warn("QueryParser threw TokenMgrException while parsing: " +
		queryString, e);
} catch (IOException e) {
    _log.error("IndexSearcher threw IOException while searching for: "
+
		queryString, e);
}

I'm about to look at the source, but if any of these exceptions look
familiar to anyone, or if you see a flaw in the code above please let
me know.

Thanks,
Otis


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