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63f64d2824
This corner case didn't behave nicely at all: the postmaster would (partially) update its state as though the process had started successfully, and be quite confused thereafter. Fix it to act like the worker had crashed, instead. In passing, refactor so that do_start_bgworker contains all the state-change logic for bgworker launch, rather than just some of it. Back-patch as far as 9.4. 9.3 contains similar logic, but it's just enough different that I don't feel comfortable applying the patch without more study; and the use of bgworkers in 9.3 was so small that it doesn't seem worth the extra work. transam/parallel.c is still entirely unprepared for the possibility of bgworker startup failure, but that seems like material for a separate patch. Discussion: https://postgr.es/m/4905.1492813727@sss.pgh.pa.us |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.