b-goyal commented on PR #6:
URL: https://github.com/apache/kafka/pull/6#issuecomment-1997287212

   While I was studying how MappedByteBuffer works, I saw a sharing runtime 
exception on Windows. I applied what I learned to generate a patch which uses 
an internal open JDK API to solve this problem.
   
   ---
   
   Caused by: java.io.IOException: The requested operation cannot be performed
   on a
    file with a user-mapped section open
           at java.io.RandomAccessFile.setLength(Native Method)
           at kafka.log.OffsetIndex.liftedTree2$1(OffsetIndex.scala:263)
           at kafka.log.OffsetIndex.resize(OffsetIndex.scala:262)
           at kafka.log.OffsetIndex.trimToValidSize(OffsetIndex.scala:247)
           at kafka.log.Log.rollToOffset(Log.scala:518)
           at kafka.log.Log.roll(Log.scala:502)
           at kafka.log.Log.maybeRoll(Log.scala:484)
           at kafka.log.Log.append(Log.scala:297)
   


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