Horton

Re: Dropping a partitioned table takes too long

Peter Eisentraut <peter.eisentraut@2ndquadrant.com>

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From: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
To: Robert Haas <robertmhaas@gmail.com>, Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
Cc: 高增琦 <pgf00a@gmail.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2017-04-26T16:21:39Z
Lists: pgsql-hackers 
On 4/26/17 12:15, Robert Haas wrote:
> On Tue, Apr 25, 2017 at 10:05 PM, Amit Langote
> <Langote_Amit_f8@lab.ntt.co.jp> wrote:
>>> The attached patch try to replace 'heap_open' with 'LockRelationOid' when
>>> locking parent table.
>>> It improved dropping a table with 7000 partitions.
>>
>> Your patch seems to be a much better solution to the problem, thanks.
> 
> Does anyone wish to object to this patch as untimely?
> 
> If not, I'll commit it.

Seems quite reasonable.

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

Commits

  1. In load_relcache_init_file, initialize rd_pdcxt.

  2. Speed up dropping tables with many partitions.