pgsql: Don't propagate a null subtransaction snapshot up to parent tran - Mailing list pgsql-committers

Don't propagate a null subtransaction snapshot up to parent transaction.

This oversight could cause logical decoding to fail to decode an outer
transaction containing changes, if a subtransaction had an XID but no
actual changes.  Per bug #14279 from Marko Tiikkaja.  Patch by Marko
based on analysis by Andrew Gierth.

Discussion: <20160804191757.1430.39011@wrigleys.postgresql.org>

Branch
------
REL9_4_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/c63588feb73f993ec596cb3b139b06e8923bea04

Modified Files
--------------
contrib/test_decoding/expected/xact.out         | 24 +++++++++++++++++++++++-
contrib/test_decoding/sql/xact.sql              | 13 ++++++++++++-
src/backend/replication/logical/reorderbuffer.c |  9 +++++----
3 files changed, 40 insertions(+), 6 deletions(-)