[Csci551-talk] Start time issue.
xiw at usc.edu
Sat Mar 19 14:10:02 PST 2005
Generally a reply with zero group node is valid and you should send such
rashmi chandrasekhar wrote:
> Just to clarify .. wont the tracker add node IDs of every request (be it assignment or interest) to the 'peer' table ? (since the tracker does not really care who has the file, he is just interested in knowing who is interested in a file) .. If yes, then, the next request from a node for an assignment will invariable result in a reply with its own ID in the reply (if the tracker still hasnt heard from any other node)
... So, basically sending a reply would become inevitable in this case.
The tracker can be (not required) designed such that it won't send back
the requesting node as a group node. Then the first node sending a show
interest with group request should get reply with zero group node.
>>What should be the output from the tracker if a node (that does
>>that have the file) asks for a group assignment before a node that
>>has the file shows interest ? The tracker has no knowlede who has
>>the file in this case .. should the reply just indicate 0 nodes so
>>that the node can ask an assignment again after request timeout
>>Till the Tracker gets the seed he has nothing to do ..
>>so client will basically timeout and tehn resend his request .
>>and if within tht time tracker has a SEED
>>he can reply back to the request of the client with a groupassign
>>hope this helps
>>happy hacking !!!!
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