Horton

Re: speeding up planning with partitions

Jesper Pedersen <jesper.pedersen@redhat.com>

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From: Jesper Pedersen <jesper.pedersen@redhat.com>
To: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>, David Rowley <david.rowley@2ndquadrant.com>, Amit Langote <amitlangote09@gmail.com>, "Imai, Yoshikazu" <imai.yoshikazu@jp.fujitsu.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2019-01-21T14:40:28Z
Lists: pgsql-hackers 
Hi,

On 1/21/19 4:01 AM, Amit Langote wrote:
> Rebased again due to 8d8dcead1295.
> 

Passes check-world on 8d8dcead1295.

I ran a work load on the series, measuring the time to load the data 
plus the run-time to complete the work load.

           Load    Run
master    3m39s   144s
1778      3m12s    36s
NP [*]    2m20s    11s

[*] Non partitioned case.

Best regards,
  Jesper

Commits

  1. Clean up handling of constraint_exclusion and enable_partition_pruning.

  2. Add test case exercising formerly-unreached code in inheritance_planner.

  3. Speed up planning when partitions can be pruned at plan time.

  4. Avoid crash in partitionwise join planning under GEQO.

  5. Avoid passing query tlist around separately from root->processed_tlist.

  6. Build "other rels" of appendrel baserels in a separate step.

  7. Get rid of duplicate child RTE for a partitioned table.

  8. Rearrange make_partitionedrel_pruneinfo to avoid work when we can't prune.

  9. Don't copy PartitionBoundInfo in set_relation_partition_info.

  10. Move building of child base quals out into a new function

  11. Reorganize planner code moved in b60c39759908

  12. Move inheritance expansion code into its own file

  13. Fix inherited UPDATE/DELETE with UNION ALL subqueries.

  14. Rearrange planner to save the whole PlannerInfo (subroot) for a subquery.