[Varnish] #1621: Synth code path fails when no backend threads are available

[Varnish]

#1621: Synth code path fails when no backend threads are available
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 Reporter:  martin    |       Owner:  Poul-Henning Kamp <phk@…>
     Type:  defect    |      Status:  closed
 Priority:  normal    |   Milestone:
Component:  varnishd  |     Version:  unknown
 Severity:  normal    |  Resolution:  fixed
 Keywords:            |
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Comment (by Lasse Karstensen <lkarsten@…>):

 In [51cee0bff0072ef2d2b39be77b92f475694540d4]:
 {{{
 #!CommitTicketReference repository=""
 revision="51cee0bff0072ef2d2b39be77b92f475694540d4"
 Don't attempt to run the fetch in the request thread if there are no
 threads available in the pool, fail the fetch and count it.

 Fixes #1620
 Fixes #1621

 (cherry picked from commit 969674dcb3b4d430a38b7f1b1e41199b25cc8491)
 }}}

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1621#comment:2>
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