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774a78ffe4
The code that tried to split a page at 75/25 ratio, when appending to the end of an index, was buggy in two ways. First, there was a silly typo that caused it to just fill the left page as full as possible. But the logic as it was intended wasn't correct either, and would actually have given a ratio closer to 60/40 than 75/25. Gaetano Mendola spotted the typo. Backpatch to 9.4, where this code was added.
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/.