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The reason for doing so is that a subsequent commit will need that to avoid wraparound issues. As the subsequent change is large this was split out for easier review. The reason this is not a perfect straight-forward change is that we do not want track 64bit xids in the procarray or the WAL. Therefore we need to advance lastestCompletedXid in relation to 32 bit xids. The code for that is now centralized in MaintainLatestCompletedXid*. Author: Andres Freund Reviewed-By: Thomas Munro, Robert Haas, David Rowley Discussion: https://postgr.es/m/20200301083601.ews6hz5dduc3w2se@alap3.anarazel.de |
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| configure | ||
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| README.git | ||
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/.