Re: [HACKERS] Parallel COPY FROM execution

> On 11 Aug 2017, at 20:07, Robert Haas <robertmhaas@gmail.com> wrote:
>
> On Fri, Aug 11, 2017 at 9:55 AM, Alex K <kondratov.aleksey@gmail.com> wrote:
>> - I have used both Latch and ConditionalVariable for the same
>> purpose–wait until some signal
>>  occurs–and for me as an end user they perform quite similar. I
>> looked into the condition_variable.c
>>  code and it uses Latch and SpinLock under the hood. So what are
>> differences and dis-/advantages
>>  between Latch and ConditionalVariable?
>
> A ConditionVariable lets you signal the processes that are waiting
> without needing to know in advance exactly which processes those are.
> If you use latches directly, you'll have to somehow keep track of
> which processes need to be signaled.

Based on the discussion in this thread, and that a new version of the patch
hasn’t been submitted during the commitfest, I’m marking this Returned with
Feedback.  Please re-submit a new version in an upcoming commitfest.

cheers ./daniel

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