Output is quite a bit simpler than input because all we do is write a
single stream of bytes with no seeking (append only), and it's done
with only one thread, so I don't think there'd be much to gain by
using the newer IO APIs for writing...
Mike McCandless
http://blog.mikemccandless.com
On Fri, Jun 28, 2013 at 2:23 AM, Jeffery Wang
jeffery.w...@morningstar.com wrote:
I have checked the FSDirectory, it will create MMapDirectory or
NIOFSDirectory for Directory.
This two directory only supply IndexInput extend for read file
(MMapIndexInput extends ByteBufferIndexInput),
why not there is not MMap/NIO IndexOutput extend for file write. It only use
FSIndexOutput for file write(FSIndexOutput extends BufferedIndexOutput).
Does FSIndexOutput wirte file very slow than MMap/NIO? How to improve the IO
write performance.
Thanks,
__
Jeffery Wang
Application Service - Backend
Morningstar (Shenzhen) Ltd.
Morningstar. Illuminating investing worldwide.
+86 755 3311 0220 Office
+86 130 7782 2813 Mobile
jeffery.w...@morningstar.commailto:jeffery.w...@morningstar.com
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