1f9158ba48
When the postmaster sends SIGQUIT to its children, there's no real need for all the children to log that fact; the postmaster already made a log entry about it, so adding perhaps dozens or hundreds of child-process log entries adds nothing of value. So, let's introduce a new ereport level to specify "WARNING, but never send to log" and use that for these messages. Such a change wouldn't have been desirable before commit 7e784d1dc, because if someone manually SIGQUIT's a backend, we *do* want to log that. But now we can tell the difference between a signal that was issued by the postmaster and one that was not with reasonable certainty. While we're here, also clear error_context_stack before ereport'ing, to prevent error callbacks from being invoked in the signal-handler context. This should reduce the odds of getting hung up while trying to notify the client. Per a suggestion from Andres Freund. Discussion: https://postgr.es/m/20201225230331.hru3u6obyy6j53tk@alap3.anarazel.de
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: https://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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.