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Custom WAL Resource Managers.

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Allow extensions to specify a new custom resource manager (rmgr),
which allows specialized WAL. This is meant to be used by a Table
Access Method or Index Access Method.

Prior to this commit, only Generic WAL was available, which offers
support for recovery and physical replication but not logical
replication.

Reviewed-by: Julien Rouhaud, Bharath Rupireddy, Andres Freund
Discussion: https://postgr.es/m/ed1fb2e22d15d3563ae0eb610f7b61bb15999c0a.camel%40j-davis.com
This commit is contained in:
Jeff Davis
2022-04-06 22:26:43 -07:00
parent a8cfb0c1a9
commit 5c279a6d35
24 changed files with 526 additions and 70 deletions
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6
src/backend/postmaster/postmaster.c
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@@ -1039,6 +1039,12 @@ PostmasterMain(int argc, char *argv[])
*/
InitializeShmemGUCs();
/*
* Now that modules have been loaded, we can process any custom resource
* managers specified in the wal_consistency_checking GUC.
*/
InitializeWalConsistencyChecking();
/*
* If -C was specified with a runtime-computed GUC, we held off printing
* the value earlier, as the GUC was not yet initialized. We handle -C