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From "Tom Quellenberg (JIRA)" <j...@apache.org>
Subject [jira] [Created] (JCR-3513) Slower range query execution
Date Thu, 07 Feb 2013 12:31:14 GMT
Tom Quellenberg created JCR-3513:
------------------------------------

             Summary: Slower range query execution
                 Key: JCR-3513
                 URL: https://issues.apache.org/jira/browse/JCR-3513
             Project: Jackrabbit Content Repository
          Issue Type: Improvement
    Affects Versions: 2.4.3
            Reporter: Tom Quellenberg


After switching from JachRabbit 1.6.4 to 2.4.3 we experienced extreme slow query executions.
All range query on date fields are often 10 times slow than before.
In our repositories more than 1 million documents are stored which all contain for example
a creation date. Typical queries look like this:

//element(*, sophora-nt:story)[@sophora:creationDate > ...]

JackRabbit has its own RangeQuery implementation which is used when Lucene throws a TooManyBooleanClauses-exception
(and in some other situations, too). This worked well in Jackrabbit 1.6. In newer versions
a different Lucene library is used which never throws TooManyBooleanClauses exceptions. Instead,
is has its own fall-back in situations where a BooleanQuery does not work. This fall-back
with a MultiTermQueryWrapperFilter seams to us much slower than the fall-back implementation
in JackRabbit (Does anybody know the reason?). It is the same situation in Jackrabbit 2.6.0
(with Lucene 3.6.0)

We patched org.apache.jackrabbit.core.query.lucene.RangeQuery to never use org.apache.lucene.search.TermRangeQuery
but always use the JackRabbit implementation. This leads to query executions as fast as in
older Jackrabbit versions.

Do other people experience this problem? Are there any drawbacks using always the JackRabbit
implementation for range queries? 

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