[jira] [Created] (LUCENE-10678) computing the partition point on a BKD tree merge can overflow

["Ignacio Vera (Jira)" <ji...@apache.org>]

Ignacio Vera created LUCENE-10678:
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             Summary: computing the partition point on a BKD tree merge can overflow
                 Key: LUCENE-10678
                 URL: https://issues.apache.org/jira/browse/LUCENE-10678
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Ignacio Vera


I just discover a bad bug in the BKD tree when doing merges. Before calling the BKDTreeRadix selector we need to compute the partition point which is dome multiplying two integers. If the partition point is > Integer.MAX_VALUE then it will overflow.

https://github.com/apache/lucene/blob/35ca2d79f73c6dfaf5e648fe241f7e0b37084a90/lucene/core/src/java/org/apache/lucene/util/bkd/BKDWriter.java#L2021

 



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