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  1. Lucene - Core
  2. LUCENE-957

Lucene RAM Directory doesn't work for Index Size > 8 GB

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • None
    • core/store
    • None

    Description

      from user list - http://www.gossamer-threads.com/lists/lucene/java-user/50982

      Problem seems to be casting issues in RAMInputStream.

      Line 90:
      bufferStart = BUFFER_SIZE * currentBufferIndex;
      both rhs are ints while lhs is long.
      so a very large product would first overflow MAX_INT, become negative, and only then (auto) casted to long, but this is too late.

      Line 91:
      bufferLength = (int) (length - bufferStart);
      both rhs are longs while lhs is int.
      so the (int) cast result may turn negative and the logic that follows would be wrong.

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            doronc Doron Cohen
            doronc Doron Cohen
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