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dff178f801
Turns out that use of ShareUpdateExclusiveLock or ShareRowExclusiveLock to protect DDL changes had gotten copied into several places that were not touched by either of Simon's original patches for the feature, and thus neither he nor I thought to revert them. (Indeed, it appears that two of these uses were committed *after* the reversion, which just goes to show that git merging is no panacea.) Change these places to use AccessExclusiveLock again. If we ever manage to resurrect that feature, we're going to have to think a bit harder about how to keep lock level usage in sync for DDL operations that aren't within the AlterTable infrastructure. Two of these bugs are only in HEAD, but one is in the 9.1 branch too. Alvaro found one of them, I found the other two. |
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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/.