Double invocation of InitPostmasterChild in bgworker with -DEXEC_BACKEND

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От Thomas Munro
Тема Double invocation of InitPostmasterChild in bgworker with -DEXEC_BACKEND
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Msg-id CAEepm=1VOnbVx4wsgQFvj94hu9jVt2nVabCr7QiooUSvPJXkgQ@mail.gmail.com
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Ответы Re: Double invocation of InitPostmasterChild in bgworker with -DEXEC_BACKEND  (Tom Lane <tgl@sss.pgh.pa.us>)
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Hi

I discovered that if you build with -DEXEC_BACKEND on a Unix system
and then try to start a background worker, it dies in
InitializeLatchSupport:

TRAP: FailedAssertion("!(selfpipe_readfd == -1)", File: "latch.c", Line: 161)

That's because InitPostmasterChild is called twice.  I can
successfully use regular parallel query workers and bgworkers created
by extensions if I apply the attached patch.

--
Thomas Munro
http://www.enterprisedb.com
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