Horton

Update the docs and comments for decoding of prepared xacts.

Amit Kapila <akapila@postgresql.org>

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Commit: b4e3dc7fd420cdc2287f30a638c4affd071f01b2
Author: Amit Kapila <akapila@postgresql.org>
Date: 2021-03-01T02:44:33Z
Releases: 14.0 
Update the docs and comments for decoding of prepared xacts.

Commit a271a1b50e introduced decoding at prepare time in ReorderBuffer.
This can lead to deadlock for out-of-core logical replication solutions
that uses this feature to build distributed 2PC in case such transactions
lock [user] catalog tables exclusively. They need to inform users to not
have locks on catalog tables (via explicit LOCK command) in such
transactions.

Reported-by: Andres Freund
Discussion: https://postgr.es/m/20210222222847.tpnb6eg3yiykzpky@alap3.anarazel.de

Files

PathChange+/−
doc/src/sgml/logicaldecoding.sgml modified +24 −0
src/backend/replication/logical/decode.c modified +14 −0

Documentation touched

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