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4fca146009
When trying to use a high number of jobs, vacuumdb has only checked for a maximum number of jobs used, causing confusing failures when running out of file descriptors when the jobs open connections to Postgres. This commit changes the error handling so as we do not check anymore for a maximum number of allowed jobs when parsing the option value with FD_SETSIZE, but check instead if a file descriptor is within the supported range when opening the connections for the jobs so as this is detected at the earliest time possible. Also, improve the error message to give a hint about the number of jobs recommended, using a wording given by the reviewers of the patch. Reported-by: Andres Freund Author: Michael Paquier Reviewed-by: Andres Freund, Álvaro Herrera, Tom Lane Discussion: https://postgr.es/m/20190818001858.ho3ev4z57fqhs7a5@alap3.anarazel.de Backpatch-through: 9.5 |
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