Re: Custom table AMs need to include heapam.h because ofBulkInsertState

On Sat, Jun 15, 2019 at 12:25:12PM +1200, David Rowley wrote:
> With the attached version I'm just calling table_finish_bulk_insert()
> once per partition at the end of CopyFrom().  We've got an array with
> all the ResultRelInfos we touched in the proute, so it's mostly a
> matter of looping over that array and calling the function on each
> ResultRelInfo's ri_RelationDesc.  However, to make it more complex,
> PartitionTupleRouting is private to execPartition.c so we can't do
> this directly... After staring at my screen for a while, I decided to
> write a function that calls a callback function on each ResultRelInfo
> in the PartitionTupleRouting.

Don't take me bad, but I find the solution of defining and using a new
callback to call the table AM callback not really elegant, and keeping
all table AM callbacks called at a higher level than the executor
makes the code easier to follow.  Shouldn't we try to keep any calls
to table_finish_bulk_insert() within copy.c for each partition
instead?

> The other thing I noticed is that we call
> table_finish_bulk_insert(cstate->rel, ti_options); in copy.c
> regardless of if we've done any bulk inserts or not. Perhaps that
> should be under an if (insertMethod != CIM_SINGLE)

Yeah, good point.
--
Michael