8da3183780
The new page deletion code didn't cope with the case the target page's right sibling was marked half-dead. It failed a sanity check which checked that the downlinks in the parent page match the lower level, because a half-dead page has no downlink. To cope, check for that condition, and just give up on the deletion if it happens. The vacuum will finish the deletion of the half-dead page when it gets there, and on the next vacuum after that the empty can be deleted. Reported by Jeff Janes.
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/.