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Commit8722186

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In pg_ctl, report unexpected failure to stat() the postmaster.pid file.
Any error other than ENOENT is a bit suspicious here, and perhaps shouldnot be grounds for assuming the postmaster has failed. For the momentthough, just report it, and don't change the behavior otherwise. Theintent is mainly to try to determine why we are seeing intermittentfailures in this area on some buildfarm members.Back-patch to 9.5 where some of these failures have happened.
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‎src/bin/pg_ctl/pg_ctl.c

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Original file line numberDiff line numberDiff line change
@@ -648,7 +648,12 @@ test_postmaster_connection(bool do_checkpoint)
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structstatstatbuf;
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if (stat(pid_file,&statbuf)!=0)
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{
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if (errno!=ENOENT)
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write_stderr(_("\n%s: could not stat file \"%s\": %s\n"),
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progname,pid_file,strerror(errno));
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returnPQPING_NO_RESPONSE;
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}
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if (found_stale_pidfile)
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{

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