01faed3678
The original coding tended to break down in the face of modified restore orders, as shown in bug #5626 from Albert Ullrich, because it would flip over into parallel-restore operation too soon. That causes problems because we don't have sufficient dependency information in dump archives to allow safe parallel processing of SECTION_PRE_DATA items. Even if we did, it's probably undesirable to allow that to override the commanded restore order. To fix the problem of omitted items causing unexpected changes in restore order, tweak SortTocFromFile so that omitted items end up at the head of the list not the tail. This ensures that they'll be examined and their dependencies will be marked satisfied before we get to any interesting items. In HEAD and 9.0, we can easily change restore_toc_entries_parallel so that all SECTION_PRE_DATA items are guaranteed to be processed in the initial serial-restore loop, and hence in commanded order. Only DATA and POST_DATA items are candidates for parallel processing. For them there might be variations from the commanded order because of parallelism, but we should do it in a safe order thanks to dependencies. In 8.4 it's much harder to make such a guarantee. I settled for not letting the initial loop break out into parallel processing mode if it sees a DATA/POST_DATA item that's not to be restored; this at least prevents a non-restorable item from causing premature exit from the loop. This means that 8.4 will be more likely to fail given a badly-ordered -L list than 9.x, but we don't really promise any such thing will work anyway.
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/.