Thread: pgsql: Fix commit_ts for FrozenXid and BootstrapXid
Fix commit_ts for FrozenXid and BootstrapXid Previously, requesting commit timestamp for transactions FrozenTransactionId and BootstrapTransactionId resulted in an error. But since those values can validly appear in committed tuples' Xmin, this behavior is unhelpful and error prone: each caller would have to special-case those values before requesting timestamp data for an Xid. We already have a perfectly good interface for returning "the Xid you requested is too old for us to have commit TS data for it", so let's use that instead. Backpatch to 9.5, where commit timestamps appeared. Author: Craig Ringer Discussion: https://www.postgresql.org/message-id/CAMsr+YFM5Q=+ry3mKvWEqRTxrB0iU3qUSRnS28nz6FJYtBwhJg@mail.gmail.com Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/4aaddf2f009821e29aea3735e44332ad9ca47aaa Modified Files -------------- src/backend/access/transam/commit_ts.c | 11 +++++++++-- src/test/modules/commit_ts/expected/commit_timestamp.out | 12 ++++++++++-- src/test/modules/commit_ts/expected/commit_timestamp_1.out | 12 ++++++++++-- src/test/modules/commit_ts/t/004_restart.pl | 14 ++++---------- 4 files changed, 33 insertions(+), 16 deletions(-)