Dear Todd,
Thanks for your reply.
Let me clarify my "response time" definition.
*start_time: time of request send
*1st_arrival_time: the 1st block of data been received
*completed_time: the final block of data been received
response time = 1st_arrival_time = start_time
Are you still confirmed that there is NO "response_time = O(number of
datanode)" ?
If so, HDFS will be great for our application. Thanks!!
--
Kevin Kuei
? 2011/1/6 ?? 04:23, Todd Lipcon ??:
Hi Kevin,
No, there is no O(number of datanodes) factor in performance.
-Todd
On Wed, Jan 5, 2011 at 8:04 PM, KevinKuei <kk...@above.net.tw
<mailto:kk...@above.net.tw>> wrote:
Hi,
I'm planing for a youtube-like video online site and looking for a
suitable file system.
The high performance and reliability of HDFS seems to be the great
candidate.
But somebody told me that the response time will be linear
increased with more data node.
I've no enough hardwares to do the test for now.
It will be very appreciated if anyone can provide such information.
Thanks!!
--
Kevin Kuei
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Todd Lipcon
Software Engineer, Cloudera
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