Add new FDW API to test for parallel-safety.
This is basically a bug fix; the old code assumes that a ForeignScan
is always parallel-safe, but for postgres_fdw, for example, this is
definitely false. It should be true for file_fdw, though, since a
worker can read a file from the filesystem just as well as any other
backend process.
Original patch by Thomas Munro. Documentation, and changes to the
comments, by me.
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/35746bc348b6bf1f690fe17f4f80cfb68e22f504
Modified Files
--------------
contrib/file_fdw/file_fdw.c | 15 +++++++++++++++
doc/src/sgml/fdwhandler.sgml | 23 +++++++++++++++++++++++
src/backend/optimizer/path/allpaths.c | 17 +++++++++++++++++
src/include/foreign/fdwapi.h | 5 +++++
4 files changed, 60 insertions(+)
