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In order to avoid getting old logfile contents certain functions in PostgresNode were doing one of two things. On Windows it rotated the logfile and restarted the server, while elsewhere it truncated the log file. Both of these are unnecessary. We borrow from the buildfarm which does this instead: note the size of the logfile before we start, and then when fetching the logfile skip to that position before accumulating contents. This is spelled differently on Windows but the effect is the same. This is largely centralized in TestLib's slurp_file function, which has a new optional parameter, the offset to skip to before starting to reading the file. Code in the client becomes much neater. Backpatch to all live branches. Michael Paquier, slightly modified by me. Discussion: https://postgr.es/m/YHajnhcMAI3++pJL@paquier.xyz
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/.