Horton

Re: PATCH: logical_work_mem and logical streaming of large in-progress transactions

Dilip Kumar <dilipbalaut@gmail.com>

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From: Dilip Kumar <dilipbalaut@gmail.com>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: Michael Paquier <michael@paquier.xyz>, Tomas Vondra <tomas.vondra@2ndquadrant.com>, Peter Eisentraut <peter.eisentraut@2ndquadrant.com>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2020-01-22T05:10:40Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Tighten the concurrent abort check during decoding.

  2. Improve hash_create()'s API for some added robustness.

  3. Use HASH_BLOBS for xidhash.

  4. Fix initialization of RelationSyncEntry for streaming transactions.

  5. Remove unused function declaration in logicalproto.h.

  6. Add additional tests to test streaming of in-progress transactions.

  7. Fix inline marking introduced in commit 464824323e.

  8. Add support for streaming to built-in logical replication.

  9. Fix the SharedFileSetUnregister API.

  10. Fix comment in procarray.c

  11. Suppress compiler warning in non-cassert builds.

  12. Extend the BufFile interface.

  13. Mark a few logical decoding related variables with PGDLLIMPORT.

  14. Implement streaming mode in ReorderBuffer.

  15. Extend the logical decoding output plugin API with stream methods.

  16. WAL Log invalidations at command end with wal_level=logical.

  17. Immediately WAL-log subtransaction and top-level XID association.

  18. Allow logical replication to transfer data in binary format.

  19. Only superuser can set sslcert/sslkey in postgres_fdw user mappings

  20. Track statistics for spilling of changes from ReorderBuffer.

  21. Add logical_decoding_work_mem to limit ReorderBuffer memory usage.

  22. logical decoding: process ASSIGNMENT during snapshot build

  23. Emit invalidations to standby for transactions without xid.

On Sat, Jan 4, 2020 at 4:07 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
Update on the open items
> As per my understanding apart from the above comments, the known
> pending work for this patchset is as follows:
> a. The two open items agreed to you in the email [3].  -> The first part is done and the second part is an improvement, not a bugfix.  I will try to work on this part in the next patch set.
> b. Complete the handling of schema_sent as discussed above [4].  -> Done
> c. Few comments by Vignesh and the response on the same by me [5][6]. -> Done
> d. WAL overhead and performance testing for additional WAL logging by
> this patchset. -> Pending
> e. Some way to see the tuple for streamed transactions by decoding API
> as speculated by you [7]. ->Pending
f. Bug in the toast table handling -> Submitted as a separate POC
patch, which can be merged to the main after review and more testing.

> [3] - https://www.postgresql.org/message-id/CAFiTN-uT5YZE0egGhKdTteTjcGrPi8hb%3DFMPpr9_hEB7hozQ-Q%40mail.gmail.com
> [4] - https://www.postgresql.org/message-id/CAA4eK1KjD9x0mS4JxzCbu3gu-r6K7XJRV%2BZcGb3BH6U3x2uxew%40mail.gmail.com
> [5] - https://www.postgresql.org/message-id/CALDaNm0DNUojjt7CV-fa59_kFbQQ3rcMBtauvo44ttea7r9KaA%40mail.gmail.com
> [6] - https://www.postgresql.org/message-id/CAA4eK1%2BZvupW00c--dqEg8f3dHZDOGmA9xOQLyQHjRSoDi6AkQ%40mail.gmail.com
> [7] - https://www.postgresql.org/message-id/CAFiTN-t8PmKA1X4jEqKmkvs0ggWpy0APWpPuaJwpx2YpfAf97w%40mail.gmail.com


-- 
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com