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Only kill sync workers at commit time in subscription DDL

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This allows a transaction abort to avoid killing those workers.

Author: Petr Jelinek <petr.jelinek@2ndquadrant.com>
This commit is contained in:
Peter Eisentraut
2017-08-04 21:14:35 -04:00
parent ff98a5e1e4
commit 7e174fa793
5 changed files with 117 additions and 6 deletions
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9
src/backend/access/transam/xact.c
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@ -2277,6 +2277,15 @@ PrepareTransaction(void)
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot PREPARE a transaction that has exported snapshots")));
/*
* Don't allow PREPARE but for transaction that has/might kill logical
* replication workers.
*/
if (XactManipulatesLogicalReplicationWorkers())
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot PREPARE a transaction that has manipulated logical replication workers")));
/* Prevent cancel/die interrupt while cleaning up */
HOLD_INTERRUPTS();