cae2bb1986
For some reason the code to emit a warning and switch to uncompressed output was placed down in the guts of pg_backup_archiver.c. This is definitely too late in the case of parallel operation (and I rather wonder if it wasn't too late for other purposes as well). Put it in pg_dump.c's option-processing logic, which seems a much saner place. Also, the default behavior with custom or directory output format was to emit the warning telling you the output would be uncompressed. This seems unhelpful, so silence that case. Back-patch to 9.3 where parallel dump was introduced. Kyotaro Horiguchi, adjusted a bit by me Report: <20160526.185551.242041780.horiguchi.kyotaro@lab.ntt.co.jp>
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