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Diffstat (limited to '')
| -rw-r--r-- | contrib/postgres_fdw/postgres_fdw.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/contrib/postgres_fdw/postgres_fdw.c b/contrib/postgres_fdw/postgres_fdw.c index b08b314..e3b9b8d 100644 --- a/contrib/postgres_fdw/postgres_fdw.c +++ b/contrib/postgres_fdw/postgres_fdw.c @@ -6968,14 +6968,16 @@ postgresForeignAsyncConfigureWait(AsyncRequest *areq) { /* * This is the case when the in-process request was made by another - * Append. Note that it might be useless to process the request, - * because the query might not need tuples from that Append anymore. - * If there are any child subplans of the same parent that are ready - * for new requests, skip the given request. Likewise, if there are - * any configured events other than the postmaster death event, skip - * it. Otherwise, process the in-process request, then begin a fetch - * to configure the event below, because we might otherwise end up - * with no configured events other than the postmaster death event. + * Append. Note that it might be useless to process the request made + * by that Append, because the query might not need tuples from that + * Append anymore; so we avoid processing it to begin a fetch for the + * given request if possible. If there are any child subplans of the + * same parent that are ready for new requests, skip the given + * request. Likewise, if there are any configured events other than + * the postmaster death event, skip it. Otherwise, process the + * in-process request, then begin a fetch to configure the event + * below, because we might otherwise end up with no configured events + * other than the postmaster death event. */ if (!bms_is_empty(requestor->as_needrequest)) return; |