postgres

Commit Graph

Author	SHA1	Message	Date
Tom Lane	7e81a18d49	Fix parallel-safety markings for contrib/dblink. As shown by buildfarm reports, dblink_build_sql_insert and dblink_build_sql_update are not parallel safe, because they may attempt to access temporary tables of the local session. Although dblink_build_sql_delete doesn't actually touch the contents of the referenced table, it seems consistent and prudent to mark it PARALLEL RESTRICTED too.	9 years ago
Robert Haas	20eb2731b7	Update dblink extension for parallel query. Almost all functions provided by this extension are PARALLEL RESTRICTED. Mostly, that's because the leader's TCP connections won't be shared with the workers, but in some cases like dblink_get_pkey it's because they obtain locks which might be released early if taken within a parallel worker. dblink_fdw_validator probably can't be used in a query anyway, but there would be no problem from the point of view of parallel query if it were, so it's PARALLEL SAFE. Andreas Karlsson	9 years ago

Author

SHA1

Message

Date

Tom Lane

7e81a18d49

Fix parallel-safety markings for contrib/dblink.

As shown by buildfarm reports, dblink_build_sql_insert and
dblink_build_sql_update are *not* parallel safe, because they
may attempt to access temporary tables of the local session.

Although dblink_build_sql_delete doesn't actually touch the
contents of the referenced table, it seems consistent and prudent
to mark it PARALLEL RESTRICTED too.

9 years ago

Robert Haas

20eb2731b7

Update dblink extension for parallel query.

Almost all functions provided by this extension are PARALLEL
RESTRICTED.  Mostly, that's because the leader's TCP connections won't
be shared with the workers, but in some cases like dblink_get_pkey
it's because they obtain locks which might be released early if taken
within a parallel worker.  dblink_fdw_validator probably can't be used
in a query anyway, but there would be no problem from the point of
view of parallel query if it were, so it's PARALLEL SAFE.

Andreas Karlsson

9 years ago

2 Commits (f07a3039c72b4a7afbe2b898fd1194575d13c37e)