| From: | Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com> |
|---|---|
| To: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Paul Ramsey <pramsey(at)cleverelephant(dot)ca>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Parallel Aggregate |
| Date: | 2016-03-07 05:19:53 |
| Message-ID: | CAJrrPGcJViiBtbakJbNPJ=jXW+P2p9ueaw9eHq3+CFOBHPug5A@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sun, Mar 6, 2016 at 10:21 PM, Haribabu Kommi
<kommi(dot)haribabu(at)gmail(dot)com> wrote:
>
> Pending:
> 1. Explain plan needs to be corrected for parallel grouping similar like
> parallel aggregate.
Here I attached update patch with further changes,
1. Explain plan changes for parallel grouping
2. Temporary fix for float aggregate types in _equalAggref because of
a change in aggtype to trans type, otherwise the parallel aggregation
plan failure in set_plan_references. whenever the aggtype is not matched,
it verifies with the trans type also.
3. Generates parallel path for all partial paths and add it to the path_list,
based on the cheapest_path, the plan is chosen.
To apply this patch, first apply the patch in [1]
[1] - http://www.postgresql.org/message-id/14172.1457228315@sss.pgh.pa.us
Regards,
Hari Babu
Fujitsu Australia
| Attachment | Content-Type | Size |
|---|---|---|
| parallelagg_v2.patch | application/octet-stream | 39.4 KB |
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