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e0b451e432
Autovacuum occurring while the test runs could allow some of the inserts to go into recycled space, thus changing the output ordering of later queries. While we could complicate those queries to force sorting of their output rows, it doesn't seem like that would make the test better in any meaningful way, and conceivably it could hide unexpected diffs. Instead, tweak the affected queries so that the inserted rows aren't updated by the following UPDATE. Per buildfarm.
The PostgreSQL contrib tree
---------------------------
This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree. This does not preclude their
usefulness.
User documentation for each module appears in the main SGML
documentation.
When building from the source distribution, these modules are not
built automatically, unless you build the "world" target. You can
also build and install them all by running "gmake all" and "gmake
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.
Some directories supply new user-defined functions, operators, or
types. To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command. In a fresh database,
you can simply do
CREATE EXTENSION module_name;
See the PostgreSQL documentation for more information about this
procedure.