Horton

Re: Pluggable Storage - Andres's take

Haribabu Kommi <kommi.haribabu@gmail.com>

View thread View on postgr.es
From: Haribabu Kommi <kommi.haribabu@gmail.com>
To: Andres Freund <andres@anarazel.de>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>, Alexander Korotkov <a.korotkov@postgrespro.ru>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2018-08-03T02:35:50Z
Lists: pgsql-hackers

Attachments

On Tue, Jul 24, 2018 at 11:31 PM Haribabu Kommi <kommi.haribabu@gmail.com>
wrote:

> On Tue, Jul 17, 2018 at 11:01 PM Haribabu Kommi <kommi.haribabu@gmail.com>
> wrote:
>
>>
>> I added new API in the tableam.h to get all the page visible tuples to
> abstract the bitgetpage() function.
>
> >>- Merge tableam.h and tableamapi.h and make most tableam.c functions
> >> small inline functions. Having one-line tableam.c wrappers makes this
> >> more expensive than necessary. We'll have a big enough trouble not
> >> regressing performancewise.
>
> I merged tableam.h and tableamapi.h into tableam.h and changed all the
> functions as inline. This change may have added some additional headers,
> will check them if I can remove their need.
>
> Attached are the updated patches on top your github tree.
>
> Currently I am working on the following.
> - I observed that there is a crash when running isolation tests.
>

while investing the crash, I observed that it is due to the lot of FIXME's
in
the code. So I just fixed minimal changes and looking into correcting
the FIXME's first.

One thing I observed is lack relation pointer is leading to crash in the
flow of EvalPlan* functions, because all ROW_MARK types doesn't
contains relation pointer.

will continue to check all FIXME fixes.


> - COPY's multi_insert path should probably deal with a bunch of slots,
>   rather than forming HeapTuples
>

Implemented supporting of slots in the copy multi insert path.

Regards,
Haribabu Kommi
Fujitsu Australia

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.