diff  LogSegment.scala LogSegment.scala
246a247,249
>     /* close the log file and index file before rename */
>     close()
> 
diff  OffsetIndex.scala OffsetIndex.scala
300,301c300,307
<       if(m.isInstanceOf[sun.nio.ch.DirectBuffer])
<         (m.asInstanceOf[sun.nio.ch.DirectBuffer]).cleaner().clean()
---
>       if(m.isInstanceOf[sun.nio.ch.DirectBuffer]) {
>         var cl = (m.asInstanceOf[sun.nio.ch.DirectBuffer]).cleaner()
> 
>         /* if cl != null, then we call it */
>         if (cl != null) {
>           cl.clean()
>         }
>       }
334a341,343
> 
>     /* forcefully free the MappedByteBuffer */
>     forceUnmap(this.mmap)