Re: Interval for launching the table sync worker

From: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
To: Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>
Cc: Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Interval for launching the table sync worker
Date: 2017-04-28 01:20:48
Message-ID: CAD21AoBY9UvS9QLrmaENGBGfQKOfGkGaLm=uYH24gmf-6CAoiw@mail.gmail.com
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On Fri, Apr 28, 2017 at 4:00 AM, Peter Eisentraut
<peter(dot)eisentraut(at)2ndquadrant(dot)com> wrote:
> On 4/27/17 06:47, Petr Jelinek wrote:
>> One thing I am missing in your patch however is cleanup of entries for
>> relations that finished sync. I wonder if it would be enough to just
>> destroy the hash when we get to empty list.
>
> I had omitted that because the amount of memory "leaked" is not much,
> but I guess it wouldn't hurt to clean it up.
>
> How about the attached?
>

Thank you for updating patch!

+ /*
+ * Clean up the hash table when we're done with all tables (just to
+ * release the bit of memory).
+ */
+ else if (!table_states && last_start_times)
+ {

Isn't it better to use != NIL instead as follows?

else if (table_state != NIL && last_start_times)

Regards,

--
Masahiko Sawada
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center

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