Horton

Re: Pluggable Storage - Andres's take

Alexander Korotkov <a.korotkov@postgrespro.ru>

View thread View on postgr.es
From: Alexander Korotkov <a.korotkov@postgrespro.ru>
To: Haribabu Kommi <kommi.haribabu@gmail.com>
Cc: Andres Freund <andres@anarazel.de>, Alvaro Herrera <alvherre@2ndquadrant.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2018-09-24T09:19:06Z
Lists: pgsql-hackers 
On Mon, Sep 24, 2018 at 8:04 AM Haribabu Kommi <kommi.haribabu@gmail.com> wrote:
> On Mon, Sep 24, 2018 at 5:02 AM Alexander Korotkov <a.korotkov@postgrespro.ru> wrote:
>>
>> On Fri, Aug 24, 2018 at 5:50 AM Andres Freund <andres@anarazel.de> wrote:
>> > I've pushed a current version of that to my git tree to the
>> > pluggable-storage branch. It's not really a version that I think makese
>> > sense to review or such, but it's probably more useful if you work based
>> > on that.  There's also the pluggable-zheap branch, which I found
>> > extremely useful to develop against.
>>
>> BTW, I'm going to take a look at current shape of this patch and share
>> my thoughts.  But where are the branches you're referring?  On your
>> postgres.org git repository pluggable-storage brach was updates last
>> time at June 7.  And on the github branches are updated at August 5
>> and 14, and that is still much older than your email (August 24)...
>
>
> The code is latest, but the commit time is older, I feel that is because of
> commit squash.
>
> pluggable-storage is the branch where the pluggable storage code is present
> and pluggable-zheap branch where zheap is rebased on top of pluggable
> storage.

Got it, thanks!

------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company

Commits

  1. Add default_table_access_method to postgresql.conf.sample.

  2. tableam: Avoid relying on relation size to determine validity of tids.

  3. tableam: Don't assume that every AM uses md.c style storage.

  4. Allow pg_class xid & multixid horizons to not be set.

  5. Fix slot type issue for fuzzy distance index scan over out-of-core table AM.

  6. tableam: comment and formatting fixes.

  7. table: docs: fix typos and grammar.

  8. tableam: basic documentation.

  9. Only allow heap in a number of contrib modules.

  10. tableam: Add table_finish_bulk_insert().

  11. tableam: sample scan.

  12. tableam: bitmap table scan.

  13. tableam: Move heap specific logic from estimate_rel_size below tableam.

  14. tableam: VACUUM and ANALYZE support.

  15. tableam: relation creation, VACUUM FULL/CLUSTER, SET TABLESPACE.

  16. tableam: Support for an index build's initial table scan(s).

  17. tableam: Add table_get_latest_tid, to wrap heap_get_latest_tid.

  18. tableam: Add helper for indexes to check if a corresponding table tuples exist.

  19. tableam: Add and use table_fetch_row_version().

  20. tableam: Use in CREATE TABLE AS and CREATE MATERIALIZED VIEW.

  21. Ensure sufficient alignment for ParallelTableScanDescData in BTShared.

  22. Don't reuse slots between root and partition in ON CONFLICT ... UPDATE.

  23. Use a virtual rather than a heap slot in two places where that suffices.

  24. Store tuples for EvalPlanQual in slots, rather than as HeapTuples.

  25. Use slots in trigger infrastructure, except for the actual invocation.

  26. Store table oid and tuple's tid in tuple slots directly.

  27. Allow to use HeapTupleData embedded in [Buffer]HeapTupleTableSlot.

  28. Add ExecStorePinnedBufferHeapTuple.

  29. Add ArchiveOpts to pass options to ArchiveEntry

  30. Rename RelationData.rd_amroutine to rd_indam.

  31. Rephrase references to "time qualification".

  32. Move remaining code from tqual.[ch] to heapam.h / heapam_visibility.c.

  33. Move generic snapshot related code from tqual.h to snapmgr.h.

  34. Remove superfluous tqual.h includes.

  35. Don't duplicate parallel seqscan shmem sizing logic in nbtree.

  36. Move vacuumlazy.c into access/heap.

  37. Support parallel bitmap heap scans.