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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2017-04-23 13:10:57 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2017-04-23 13:11:08 -0400 |
| commit | f5885488dacb62277c6452919e8961d27685675f (patch) | |
| tree | a58edbd8c2843520c15a1bb61dfca6be9169df68 | |
| parent | 11927e575dd2afc8361e785c34db2141156702d6 (diff) | |
Fix order of arguments to SubTransSetParent().
ProcessTwoPhaseBuffer (formerly StandbyRecoverPreparedTransactions)
mixed up the parent and child XIDs when calling SubTransSetParent to
record the transactions' relationship in pg_subtrans.
Remarkably, analysis by Simon Riggs suggests that this doesn't lead to
visible problems (at least, not in non-Assert builds). That might
explain why we'd not noticed it before. Nonetheless, it's surely wrong.
This code was born broken, so back-patch to all supported branches.
Discussion: https://postgr.es/m/20110.1492905318@sss.pgh.pa.us
| -rw-r--r-- | src/backend/access/transam/twophase.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/access/transam/twophase.c b/src/backend/access/transam/twophase.c index ea7bfa0578b..88fa270fe3c 100644 --- a/src/backend/access/transam/twophase.c +++ b/src/backend/access/transam/twophase.c @@ -1887,7 +1887,7 @@ StandbyRecoverPreparedTransactions(bool overwriteOK) TransactionId subxid = subxids[i]; Assert(TransactionIdFollows(subxid, xid)); - SubTransSetParent(xid, subxid, overwriteOK); + SubTransSetParent(subxid, xid, overwriteOK); } pfree(buf); |