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https://issues.apache.org/jira/browse/LUCENE-2406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthick Sankarachary updated LUCENE-2406:
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Attachment: LUCENE-2406.patch
LUCENE-2406-error.txt
TestMaxHitLimit.java
> Max Out Hit Limits To Max Doc
> -----------------------------
>
> Key: LUCENE-2406
> URL: https://issues.apache.org/jira/browse/LUCENE-2406
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 3.0
> Reporter: Karthick Sankarachary
> Attachments: LUCENE-2406-error.txt, LUCENE-2406.patch,
> TestMaxHitLimit.java
>
>
> Currently, the IndexSearcher lets you limit the number of hits that a search
> returns. Ironically, that option works against you if the limit is set to a
> very large number. In particular, during the initialization of the search
> process, the hit queue attempts to allocate as many document scores as the
> hit limit. Needless to say, this is bound to lead to out of memory issues in
> the event the hit limit passed by the user is very large.
> This issue can be verified by setting the hit limit to the maximum integer
> value (please see test case attached herein.) Note that the test fails in the
> PriorityQueue#initialize method as it tries to increase the hit limit by one
> (to make room for a sentinel object), which causes an integer overflow
> (please see the stack trace attached herein.)
> The root cause of this issue lies not in the priority queue, but in the index
> searcher itself. Ideally, it should ensure that the hit limit does not exceed
> it's maxDoc count, which typically is the maximum number of documents held in
> the underlying index reader. A patch that implements the above sanity check
> has been attached herein.
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