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a6f774e57e
Replaces the old way we deleted keys which was built for tde_heap_basic with deleting the the relation key when smgr_unlink() is called on the main fork. This function is always called after commit/abort when a relation deletion has been registered, even if no main fork would exist. This approach means we do not need to WAL log any event for deleting relation keys, the normal SMGR unlink also handles that which fits well into the current approach of doing most of the encryption at the SMGR layer. We also remove the subtransaction test which is no longer useful since it tested things very specific to the old key deleteion.
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.