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Subject: Re: When is it appropirate to add reserved words to the AQL/SQL++
 Grammar?
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From: Mike Carey <dtabass@gmail.com>
Message-ID: <667cbe8c-6907-2cb7-6299-cae26b224e3e@gmail.com>
Date: Wed, 12 Apr 2017 14:41:21 -0700
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So you want to basically quiesce a dataset "all the way" - so that it's 
not open at all, and perhaps so that the buffer pool also has none of 
its pages resident?


On 4/12/17 2:26 PM, Ian Maxon wrote:
> That's a little different than from what I'd like to do. Basically I
> want to evict the dataset entirely. My alterior motive here is to test
> the correctness of persisted storage artifacts as right now in many
> cases this is not covered. It has been a recurring theme in many bugs
> that there is some stored artifact on disk that is written incorrectly
> but never read during tests, because often the tests simply never
> encounter the path in which this would occur (restart,eviction, etc.)
>
> On Wed, Apr 12, 2017 at 1:46 PM, Ildar Absalyamov
> <ildar.absalyamov@gmail.com> wrote:
>> Ian,
>>
>> There is an existing API, which does exactly that. https://github.com/apache/asterixdb/blob/master/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/ConnectorApiServlet.java#L123 <https://github.com/apache/asterixdb/blob/master/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/ConnectorApiServlet.java#L123>
>> I have been successfully using it in my experiments.
>>
>>> On Apr 12, 2017, at 13:41, Ian Maxon <imaxon@uci.edu> wrote:
>>>
>>> Hey all,
>>> I was working on a patch that would add a 'flush dataset' DDL command
>>> (mainly for testing), and of course this would require adding 'flush'
>>> as a new reserved word. What is the consensus on when this would be
>>> permitted at this point? There are other ways to do this, of course, I
>>> could expose this functionality through a separate API, and I am not
>>> really partial to one solution or the other.
>>>
>>> Thanks,
>>> - Ian
>> Best regards,
>> Ildar
>>


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