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The various places that transferred fast-path locks to the main lock table neglected to release the PGPROC's backendLock if SetupLockInTable failed due to being out of shared memory. In most cases this is no big deal since ensuing error cleanup would release all held LWLocks anyway. But there are some hot-standby functions that don't consider failure of FastPathTransferRelationLocks to be a hard error, and in those cases this oversight could lead to system lockup. For consistency, make all of these places look the same as FastPathTransferRelationLocks. Noted while looking for the cause of Dan Wood's bugs --- this wasn't it, but it's a bug anyway. |
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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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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/.