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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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2
src/backend/access/transam/xlogreader.c
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@ -1102,7 +1102,7 @@ ValidXLogRecordHeader(XLogReaderState *state, XLogRecPtr RecPtr,
(uint32) SizeOfXLogRecord, record->xl_tot_len);
return false;
}
if (record->xl_rmid > RM_MAX_ID)
if (!RMID_IS_VALID(record->xl_rmid))
{
report_invalid_record(state,
"invalid resource manager ID %u at %X/%X",