[ 
http://issues.apache.org/jira/browse/LUCENE-753?page=comments#action_12459731 ] 
            
Doug Cutting commented on LUCENE-753:
-------------------------------------

This patch continues to use BufferedIndexInput and allocates a new ByteBuffer 
for each call to read().  I wonder if it might be more efficient to instead 
directly extend IndexInput and always represent the buffer as a ByteBuffer?

> Use NIO positional read to avoid synchronization in FSIndexInput
> ----------------------------------------------------------------
>
>                 Key: LUCENE-753
>                 URL: http://issues.apache.org/jira/browse/LUCENE-753
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Store
>            Reporter: Yonik Seeley
>         Attachments: FSIndexInput.patch
>
>
> As suggested by Doug, we could use NIO pread to avoid synchronization on the 
> underlying file.
> This could mitigate any MT performance drop caused by reducing the number of 
> files in the index format.

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