[tahoe-dev] [tahoe-lafs] #287: download: tolerate lost or missing servers

tahoe-lafs trac at allmydata.org
Wed Jan 27 20:49:17 UTC 2010


#287: download: tolerate lost or missing servers
---------------------------------------------------------+------------------
 Reporter:  warner                                       |           Owner:            
     Type:  defect                                       |          Status:  new       
 Priority:  major                                        |       Milestone:  eventually
Component:  code-encoding                                |         Version:  0.7.0     
 Keywords:  download availability performance test hang  |   Launchpad_bug:            
---------------------------------------------------------+------------------

Comment(by zooko):

 Many of the problems that I've observed which I thought were a case of
 this ticket have actually turned out to be a case of #928 (start
 downloading as soon as you know where to get K shares).  That is: it was
 ''not'' the case that a server failed and got into a hung state during a
 download.  (I never could understand how this problem could be so common
 if it required this particular timing!)  Instead it was the case that if a
 server failed and got into a hung state then all subsequent downloads
 would hang.  This was happening quite a lot on the allmydata.com prod grid
 recently because servers were experiencing !MemoryError and then going
 into this state.

-- 
Ticket URL: <http://allmydata.org/trac/tahoe/ticket/287#comment:15>
tahoe-lafs <http://allmydata.org>
secure decentralized file storage grid


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