[Csci551-talk] Re: [Cs551] Doubt regarding Algorithm T
Xi Wang
xiw at usc.edu
Wed Apr 13 18:58:39 PDT 2005
You are free to design your own method for this case. Please document it
in README. We think some reasonable approaches are:
1. skip sequentially to the next viable segment
2. timeout and retry when more peers are on-line (since once the seed
is online every segment will be covered
-Xi
Rohith Mark Varghese wrote:
> Hi,
>
> I have a small doubt on how we are supposed to implement Algo T.
>
> Assume the following scenario:
> Node 2 is a seed i.e. it has the entire file
> Node 1 has segments 4,5,6,7,8 (he is downloading segments sequentially
> from segment 4 onwards)
> Node 0 is beginning his life in our system. He is expected to download
> segnemts sequentially from segment 1 onwards. He's recieved INFO_REPLY
> only from node 1, since node 2 probabilistically dropped his reply packet.
>
> Now, since node 0 has only node 1as a neighbor, should he request
> segments 4 to 8 from node 1 and get segments 1 to 3 later; or should he
> simply keep mum for this cycle because he is expected to download
> segments sequentially from segment 1 onwards?
>
> Thanks,
>
> Mark
>
>
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