Re: Wait for parallel workers to attach

On Wed, Jan 31, 2018 at 9:53 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Wed, Jan 31, 2018 at 3:57 AM, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>>> * There might be some opportunity to share some of the new code with
>>> the code recently committed to WaitForParallelWorkersToFinish(). For
>>> one thing, the logic in this block could be refactored into a
>>> dedicated function that is called by both
>>> WaitForParallelWorkersToAttach() and WaitForParallelWorkersToFinish():
>>
>> I had thought about this earlier but left it as the common code was
>> too less, however as you have pointed out, I had extracted the common
>> code into a separate function.
>
> I like it better the other way, so I've changed it back in the
> attached version,
>

Okay, no problem.

> which also works over the comments fairly heavily.
>

+ * However, if the leader needs to wait for
+ * all of its workers or for a specific worker, it may want to call this
+ * function before doing so.

I think suggesting to use this API to wait "for a specific worker"
doesn't seem like a good idea as it doesn't have any such provision.
Other than that the patch looks good.

--
With Regards,
Amit Kapila.
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