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76c0b73df6
Before initializing iteration over a subtransaction's changes, the last few changes were not spilled to disk. That's correct if the transaction didn't spill to disk, but otherwise... This bug can lead to missed or misorderd subtransaction contents when they were spilled to disk. Move spilling of the remaining in-memory changes to ReorderBufferIterTXNInit(), where it can easily be applied to the top transaction and, if present, subtransactions. Since this code had too many bugs already, noticeably increase test coverage. Fixes: #14319 Reported-By: Huan Ruan Discussion: <20160909012610.20024.58169@wrigleys.postgresql.org> Backport: 9,4-, where logical decoding was added
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 "make all" and "make
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.