[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2409: tolerate simultaneous uploads better

[Tahoe-LAFS]

#2409: tolerate simultaneous uploads better
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     Reporter:  warner         |      Owner:
         Type:  defect         |     Status:  new
     Priority:  major          |  Milestone:  undecided
    Component:  code-encoding  |    Version:  1.10.0
   Resolution:                 |   Keywords:  upload usability performance
Launchpad Bug:                 |
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Changes (by daira):

 * keywords:   => upload usability performance
 * priority:  normal => major


Comment:

 zooko wrote in #952:
 > As described in #950 (upload doesn't appear in the Recent Uploads
 Downloads page) and #951 (uploads aren't cancelled by closing the web
 page) I started an upload of a large (350 MB) file, then started a second
 upload of the same file. Later I discovered that both uploads were
 running:
 >
 > {{{
 > # 2010-02-14 18:38:58.761541Z [152794]: <Encoder for 5ossh> uploaded
 266352528 / 353388984 bytes (75%) of your file.
 > # 2010-02-14 18:39:06.215643Z [152863]: storage: allocate_buckets
 5osshw7oonef6qlpvdvtmuskt4
 > # 2010-02-14 18:39:17.599753Z [152865]: <Encoder for 5ossh> uploaded
 266483607 / 353388984 bytes (75%) of your file.
 > # 2010-02-14 18:39:17.608450Z [152867]: peer selection successful for
 <Tahoe2PeerSelector for upload 5ossh>: placed all 26 shares, sent 23
 queries to 13 peers, 20 queries placed some shares, 2 placed none, got 1
 errors
 > # 2010-02-14 18:39:17.610185Z [152868]: _send_shares, used_peers is
 set([<PeerTracker for peer we543qo4 and SI 5ossh>, <PeerTracker for peer
 hfhjhv7s and SI 5ossh>, <PeerTracker for peer 2bu4lxwa and SI 5ossh>,
 <PeerTracker for peer xjy2clbq and SI 5ossh>, <PeerTracker for peer
 5ouv6kib and SI 5ossh>, <PeerTracker for peer t6d76eso and SI 5ossh>,
 <PeerTracker for peer rhug4hsl and SI 5ossh>, <PeerTracker for peer
 wbxexhfu and SI 5ossh>, <PeerTracker for peer 62u7qrne and SI 5ossh>,
 <PeerTracker for peer 5xzrcb27 and SI 5ossh>])
 > # 2010-02-14 18:39:17.887869Z [152869]: <Encoder for 5ossh> starting
 > # 2010-02-14 18:39:18.554996Z [152947]: <Encoder for 5ossh> uploaded
 266614686 / 353388984 bytes (75%) of your file.
 > # 2010-02-14 18:39:18.597406Z [153004]: <Encoder for 5ossh> uploaded
 131079 / 353388984 bytes (0%) of your file.
 > # 2010-02-14 18:39:21.569559Z [153081]: <Encoder for 5ossh> uploaded
 266745765 / 353388984 bytes (75%) of your file.
 > # 2010-02-14 18:39:21.610486Z [153138]: <Encoder for 5ossh> uploaded
 262158 / 353388984 bytes (0%) of your file.
 > }}}
 >
 > To close this ticket, make so a second upload of the same file (when
 using the same added convergence secret of course) just waits for the
 first upload instead of starting a second task (which will compete with
 the first one for resources).

--
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2409#comment:1>
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