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From Patricia Shanahan <p...@acm.org>
Subject ServiceDiscoveryManager concurrency
Date Fri, 06 Aug 2010 19:16:45 GMT
[I've change the subject from "TaskManager progress" to reflect a change 
in focus from TaskManager refactoring to understanding the SDM 
concurrency behavior.]

You say "I had a hard time". Does it now work, in the sense of achieving 
a reasonable balance between the multi-cast and uni-cast protocols? If 
so, did you fix something in SDM or change how you were using it to get 
it to work?


On 8/6/2010 7:47 AM, Gregg Wonderly wrote:
> Okay, it looks like there are several things that we need to look at
> with the SDM code then(*). I think we need to look carefully at the
> mutations of the data that are occurring and that River-324 tries to
> help manage to see if we can get our heads around it and hopefully make
> sure that we believe that River-324's problem of stale or wrong cache
> contents can be managed more readily.
> Gregg Wonderly
> * I had a hard time getting SDM to work reliably for me, and in
> particular, it initially did not perform unicast lookups, but waited for
> multi-cast announcements only and this made it non-functional on
> non-local network segments.

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