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b2c95a3798
Similar to what was fixed in commit 9915de6c1cb2 for replication slots, but this time it's related to replication origins: DROP SUBSCRIPTION attempts to drop the replication origin, but that fails if the replication worker process hasn't yet marked it unused. This causes failures in the buildfarm: ERROR: could not drop replication origin with OID 1, in use by PID 34069 Like the aforementioned commit, fix by having the process running DROP SUBSCRIPTION sleep until the worker marks the the replication origin struct as free. This uses a condition variable on each replication origin shmem state struct, so that the session trying to drop can sleep and expect to be awakened by the process keeping the origin open. Also fix a SGML markup in the previous commit. Discussion: https://postgr.es/m/20170808001433.rozlseaf4m2wkw3n@alvherre.pgsql
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/.