Uploaded image for project: 'Lucene - Core'
  1. Lucene - Core
  2. LUCENE-1457

There are a few binary search implmentations in lucene that suffer from a now well known overflow bug

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Trivial
    • Resolution: Fixed
    • None
    • 2.4.1, 2.9
    • None
    • None
    • New

    Description

      http://googleresearch.blogspot.com/2006/06/extra-extra-read-all-about-it-nearly.html

      The places I see it are:

      MultiSearcher.subSearcher(int)
      TermInfosReader.getIndexOffset(Term)
      MultiSegmentReader.readerIndex(int, int[], int)
      MergeDocIDRemapper.remap(int)

      I havn't taken much time to consider how likely any of these are to overflow. The values being averaged would have to be very large. That would rule out possible problems for at least a couple of these, but how about something like the MergeDocIDRemapper? Is there a document number that could be reached that has a chance of triggering this bug? If not we can close this and have a record of looking into it.

      Attachments

        Activity

          People

            Unassigned Unassigned
            markrmiller@gmail.com Mark Miller
            Votes:
            0 Vote for this issue
            Watchers:
            0 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: