RE: I'd like to discuss scaleout at PGCon
От | Tsunakawa, Takayuki |
---|---|
Тема | RE: I'd like to discuss scaleout at PGCon |
Дата | |
Msg-id | 0A3221C70F24FB45833433255569204D1F9A0473@G01JPEXMBYT05 обсуждение исходный текст |
Ответ на | Re: I'd like to discuss scaleout at PGCon (Michael Paquier <michael@paquier.xyz>) |
Список | pgsql-hackers |
From: Michael Paquier [mailto:michael@paquier.xyz] > > On Wed, Jun 6, 2018 at 8:16 PM, MauMau <maumau307@gmail.com> wrote: > >> Looking at the XL source code, the following sequence of functions > >> are called when the coordinator handles the Row Description message > >> ('T') from the data node. I guess the parsing is necessary to > >> process type names combined with type modifiers, e.g. "char(100)". > >> > >> create_tuple_desc > >> parseTypeString > >> typeStringToTypeName > >> raw_parser > > > > Hmm, strange. I had not seen that in Postgres-XC. > > Where is that located in the XC code? If you point out to the location > it may revive some past memories from either Ashutosh or me. The XL-specific code path is this in src/backend/pgxc/pool/execRemote.c (I don't know this also exists in XC): handle_response -> HandleRowDescription -> create_tuple_desc I think the rest exists in PostgreSQL: parseTypeString -> typeStringToTypeName -> raw_parser Regards Takayuki Tsunakawa
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