Coming back to the question in the subject: If we need such
functionality e.g. for testing of performance measurements, how should
we expose it? Should we
- extend the language with new keywords or
- introduce on keyword for this that is followed by some parameters or
- expose new HTTP APIs or
- …
Thoughts?
Cheers,
Till
On 12 Apr 2017, at 15:11, Ian Maxon wrote:
Yes, more or less. I'm not sure that I would force the buffer cache,
but at least I want all of the "object" representations outside of
that to have vanished such that their state must be regenerated from
the at-rest format.
On Wed, Apr 12, 2017 at 2:41 PM, Mike Carey <[email protected]> wrote:
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
<[email protected]> 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 <[email protected]> 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
