Horton

Re: POC: Sharing record typmods between backends

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: Robert Haas <robertmhaas@gmail.com>, Dilip Kumar <dilipbalaut@gmail.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2017-08-22T23:41:23Z
Lists: pgsql-hackers 
On 2017-08-21 11:02:52 +1200, Thomas Munro wrote:
> On Mon, Aug 21, 2017 at 6:17 AM, Andres Freund <andres@anarazel.de> wrote:
> > Pushing 0001, 0002 now.
> >
> > - rebased after conflicts
> > - fixed a significant number of too long lines
> > - removed a number of now superflous linebreaks
> 
> Thanks!  Please find attached a rebased version of the rest of the patch set.

Pushed 0001, 0002.  Looking at later patches.


Greetings,

Andres Freund

Commits

  1. Remove TupleDesc remapping logic from tqueue.c.

  2. Add support for coordinating record typmods among parallel workers.

  3. Improve division of labor between execParallel.c and nodeGather[Merge].c.

  4. Add minimal regression test for blessed record type transfer.

  5. Consolidate the function pointer types used by dshash.c.

  6. Fix unlikely shared memory leak after failure in dshash_create().

  7. Refactor typcache.c's record typmod hash table.

  8. Add a hash_combine function for mixing hash values.

  9. Backpatch introduction of TupleDescAttr(tupdesc, i).

  10. Partially flatten struct tupleDesc so that it can be used in DSM.

  11. Change tupledesc->attrs[n] to TupleDescAttr(tupledesc, n).