diff options
Diffstat (limited to 'src/backend/commands')
| -rw-r--r-- | src/backend/commands/copy.c | 3 | ||||
| -rw-r--r-- | src/backend/commands/sequence.c | 14 |
2 files changed, 16 insertions, 1 deletions
diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c index 92ff632e124..0d3721a96da 100644 --- a/src/backend/commands/copy.c +++ b/src/backend/commands/copy.c @@ -924,9 +924,10 @@ DoCopy(const CopyStmt *stmt, const char *queryString, uint64 *processed) { Assert(rel); - /* check read-only transaction */ + /* check read-only transaction and parallel mode */ if (XactReadOnly && !rel->rd_islocaltemp) PreventCommandIfReadOnly("COPY FROM"); + PreventCommandIfParallelMode("COPY FROM"); cstate = BeginCopyFrom(rel, stmt->filename, stmt->is_program, stmt->attlist, stmt->options); diff --git a/src/backend/commands/sequence.c b/src/backend/commands/sequence.c index 6d316d62b6c..80f5553d3a4 100644 --- a/src/backend/commands/sequence.c +++ b/src/backend/commands/sequence.c @@ -565,6 +565,13 @@ nextval_internal(Oid relid) if (!seqrel->rd_islocaltemp) PreventCommandIfReadOnly("nextval()"); + /* + * Forbid this during parallel operation because, to make it work, + * the cooperating backends would need to share the backend-local cached + * sequence information. Currently, we don't support that. + */ + PreventCommandIfParallelMode("nextval()"); + if (elm->last != elm->cached) /* some numbers were cached */ { Assert(elm->last_valid); @@ -862,6 +869,13 @@ do_setval(Oid relid, int64 next, bool iscalled) if (!seqrel->rd_islocaltemp) PreventCommandIfReadOnly("setval()"); + /* + * Forbid this during parallel operation because, to make it work, + * the cooperating backends would need to share the backend-local cached + * sequence information. Currently, we don't support that. + */ + PreventCommandIfParallelMode("setval()"); + /* lock page' buffer and read tuple */ seq = read_seq_tuple(elm, seqrel, &buf, &seqtuple); |