| From: | Hadi Moshayedi <hadi(at)citusdata(dot)com> |
|---|---|
| To: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
| Cc: | PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [PATCH] Call RelationDropStorage() for broader range of object drops. |
| Date: | 2017-09-14 03:54:20 |
| Message-ID: | CA+_kT_f1S4iG=udsM3kq3JwbcbZGKTQJTovyY8m1wnCuC5OUyQ@mail.gmail.com |
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On Wed, Sep 13, 2017 at 12:12 AM, Michael Paquier <michael(dot)paquier(at)gmail(dot)com
> wrote:
>
> Foreign tables do not have physical storage assigned to by default. At
> least heap_create() tells so, create_storage being set to false for a
> foreign table. So there is nothing to clean up normally. Or is
> cstore_fdw using directly heap_create with its own relfilenode set,
> creating a physical storage?
>
cstore_fdw (in store_data_in_internal_storage branch) calls
RelationCreateStorage() after CREATE FOREIGN TABLE completes [1]. Later it
also creates the FSM fork and uses it for storing some metadata.
[1]
https://github.com/citusdata/cstore_fdw/blob/store_data_in_internal_storage/cstore_fdw.c#L237
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