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Since commit 40dae7ec53, which changed the way b-tree page splitting works, there has been no difference in the handling of root, and non-root split WAL records. We don't need to distinguish them anymore If you're worried about the loss of debugging information, note that usually a root split record will normally be followed by a WAL record to create the new root page. The root page will also have the BTP_ROOT flag set on the page itself, and there is a pointer to it from the metapage. Author: Aleksander Alekseev Discussion: https://www.postgresql.org/message-id/20170406122116.GA11081@e733.localdomain
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/.