diff options
| author | Pavan Deolasee | 2017-05-18 04:52:31 +0000 |
|---|---|---|
| committer | Pavan Deolasee | 2017-05-18 04:52:31 +0000 |
| commit | 9b12e275cd0b42c2cc4f65b8f6dd771d394bbba7 (patch) | |
| tree | 9f8ed2a2fb63bc6fb6107533acd5eea3be9f7ce5 | |
| parent | 802721867a8d3862eb2ebdb64db1faac013354b8 (diff) | |
Ensure that multi-node executor is initialised correctly.
Since parallel background worker threads may need to communicate with remote
nodes, we should initialise multi-node executor when the parallel worker starts
it work. This was discovered while running queries with force_parallel_mode set
to on.
| -rw-r--r-- | src/backend/access/transam/parallel.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/backend/access/transam/parallel.c b/src/backend/access/transam/parallel.c index a47eba647b..3c0da2e1e0 100644 --- a/src/backend/access/transam/parallel.c +++ b/src/backend/access/transam/parallel.c @@ -1008,6 +1008,11 @@ ParallelWorkerMain(Datum main_arg) BackgroundWorkerInitializeConnectionByOid(fps->database_id, fps->authenticated_user_id); + StartTransactionCommand(); + /* Initialize XL executor. This must be done inside a transaction block. */ + InitMultinodeExecutor(false); + CommitTransactionCommand(); + /* * Set the client encoding to the database encoding, since that is what * the leader will expect. |