Re: [HACKERS] Proposal : For Auto-Prewarm.

On Tue, Feb 7, 2017 at 2:04 AM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> On Tue, Feb 7, 2017 at 10:44 AM, Mithun Cy <mithun.cy@enterprisedb.com> wrote:
>>
>> ==================
>> One problem now I have kept it open is multiple "auto pg_prewarm dump"
>> can be launched even if already a dump/load worker is running by
>> calling launch_pg_prewarm_dump. I can avoid this by dropping a
>> lock-file before starting the bgworkers. But, if there is an another
>> method to avoid launching bgworker on a simple method I can do same.
>>
>
> How about keeping a variable in PROC_HDR structure to indicate if
> already one dump worker is running, then don't allow to start a new
> one?

A contrib module shouldn't change core (and shouldn't need to).  It
can register its own shared memory area if it wants.

-- 
Robert Haas
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