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From "Joe Krause" <JKra...@multivisioninc.com>
Subject BooleanQuery - TooManyClauses Issue
Date Tue, 16 Nov 2004 20:35:13 GMT
Hey Folks, I just inherited a deployed Lucene based application that
started throwing the following exception:

org.apache.lucene.search.BooleanQuery$TooManyClauses
        at
org.apache.lucene.search.BooleanQuery.add(BooleanQuery.java:79)
        at
org.apache.lucene.search.BooleanQuery.add(BooleanQuery.java:71)
        at
org.apache.lucene.search.RangeQuery.rewrite(RangeQuery.java:99)
        at
org.apache.lucene.search.BooleanQuery.rewrite(BooleanQuery.java:243)
        at
org.apache.lucene.search.IndexSearcher.rewrite(IndexSearcher.java:166)
        at org.apache.lucene.search.Query.weight(Query.java:84)
        at
org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:117)
        at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:64)
        at org.apache.lucene.search.Hits.<init>(Hits.java:51)
        at org.apache.lucene.search.Searcher.search(Searcher.java:41)
        at
com.multivision.util.search.HitIndex.search(HitIndex.java:121)
        at
com.multivision.util.search.HitSearchAgent.search(HitSearchAgent.java:83
)
        at com.multivision.model.HitModel.list(HitModel.java:80)
        at
com.multivision.actions.client.hits.SearchAction.action(SearchAction.jav
a:81)
        at
com.multivision.actions.ClientAuthenticated.doExecute(ClientAuthenticate
d.java:45)
        at
com.multivision.actions.MultivisionAction.execute(MultivisionAction.java
:41)
        at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestPr
ocessor.java:421)
        at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
226)
        at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
        at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        ...

It wasn't doing this two weeks ago, but it started doing it this week. I
deleted the index directory and reindexed all the files, but that
doesn't seem to help.

I did some research regarding this error and found out that the default
number of clauses a BooleanQuery can contain are 1024 (a limitation, but
one that seems reasonable to work with). I outputted the contents of the
org.apache.lucene.search.Query object and the
org.apache.lucene.search.Sort objects right before I sent them to the
org.apache.lucene.search.IndexSearcher - to see if there are too many
clauses being accidentally produced. This is what I get:

2004-11-16 12:09:40,302 DEBUG  com.multivision.util.search.HitIndex -
Query = +(affiliate:teeth market:teeth dma_rank:teeth program:teeth
station:teeth text:teeth) +air_date:[0401010000 TO 0411162359]

2004-11-16 12:09:40,302 DEBUG com.multivision.util.search.HitIndex -
Sort = "air_date"!,"dma_rank"

So there appears to be far fewer than 1024 clauses. Is there any other
reasons why I would be getting this exception? I am new to Lucene, so at
this point I am stumped.

Thanks for your help!

Joe Krause

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