Internally we have a multi-inputs merge join, for each input there maybe a
collation permutations.
Best,
Danny Chan
在 2020年1月8日 +0800 AM1:20，Xiening Dai ，写道：
> Danny, I am not sure how this would affect join re-order. Could you elaborate?
>
>
> > On Jan 7, 2020, at 1:29 AM, Danny Chan wrote:
>
> 1. Should we change the condition of root converters creation from the
direct traitset difference to the difference with considering traits
hierarchy (like [] includes [1])?
I think so. Specifically non-empty required trait diff. Singleton is the only
diff in your example. It doesn't care
Totally agree. It deserves praise that rotate chair annually and run Calcite
community so active and in order.
Juan Pan (Trista)
Senior DBA & PPMC of Apache ShardingSphere(Incubating)
E-mail: panj...@apache.org
On 01/7/2020 04:17，Julian Hyde wrote：
Is it worth
> @Haisheng, are you doing something like that?
Kind of, but not exactly. It is about on-demand trait propagation.
@Roman seems to be keen on space pruning for Calcite. But IMHO, for now, the
main reason of Calcite's poor performance is not lack of branch & bound space
puning, but
- rule
In terms of the changes for this release, the dockerfiles has been fixed
and I believe you've reordered the steps for finalizing a release using
gradle.
I think the problem is somewhat annoying, but has not been an issue
before. If there is some consensus regarding this, I am happy to make
What I meant was that
https://github.com/apache/calcite-site/commit/81960613e7750a9191280719352ae941a7d6a22d#diff-efedb3376e58f7bcc03c666d03682ce3R154
looked like it was built from calcite's master branch, so the
documentation is missing.
The site branch does not have any commits for gradle:
AFAIK it is up to the release manager.
Vladimir
>Can you cherry pick the appropriate commits for the migration
>into the site branch?
What do you mean by that?
Can we just revert the invalid commits and be done with it?
I already suggested that the site update should be simplified,
and now we have clear evidence that the current process of
Ah, I see the problem now. I always build the site from the site branch
(as there may be things on master that shouldn't be published before a
release). Can you cherry pick the appropriate commits for the migration
into the site branch? I'll rebuild and push the site.
Francis
On 8/01/2020
Francis>There is
Francis>
https://github.com/apache/calcite-site/commit/81960613e7750a9191280719352ae941a7d6a22d
,
Francis>but there doesn't appear to be any changes to the build
instructions for
Francis>gradle.
Here you go:
Has there been any progress/solution regarding the LF and CRLF issue?
Francis
On 30/12/2019 2:43 am, Vladimir Sitnikov wrote:
Stamitis>I was thinking that if the check says that there is no problem
then apply
would be a noop.
The current logic of 'apply' is it computes the appropriate style
I pushed the latest site files under the avatica folder only in that
commit. There were no changes to Calcite's site (everything other than
the avatica folder).
There is
https://github.com/apache/calcite-site/commit/81960613e7750a9191280719352ae941a7d6a22d,
but there doesn't appear to be any
So far I have PR https://github.com/apache/calcite/pull/1721 that adds
verification to EnumerableTableScan constructor.
Unfortunately, we have a lot of test cases that assume the relation would
be EnumerableTableScan even
in the case test verifies logical plan only :(
That is why I added extra
I have logged https://issues.apache.org/jira/browse/CALCITE-3716. No
one is working on fixing it currently.
On Tue, Jan 7, 2020 at 2:14 AM Juan Pan wrote:
>
> Thanks your explanation, Julian. Does it mean the optimization of this JDBC
> interface may be included in next release of Calcite?
>
>
Julian Hyde created CALCITE-3716:
Summary: ResultSetMetaData.getTableName should return empty
string, not null, when column does not map to a table
Key: CALCITE-3716
URL:
Hi,
I've found there are two ways to compute the cumulative cost, and they
happen to be quite different.
VolcanoPlanner#getCost seems to be the right one (see [1])
It properly accounts for RelSubset and uses its bestCost
On the other hand, mq.getCumulativeCost(rel) is quite poor (see [2]).
It
I forgot to mention that this approach was inspired by Stamatis's idea [1]
[1]
https://ponymail-vm.apache.org/_GUI_/thread.html/d8f8bc0efd091c0750534ca5cd224f4dfe8940c9d0a99ce486516fd5@%3Cdev.calcite.apache.org%3E
--
Kind Regards
Roman Kondakov
On 07.01.2020 21:14, Roman Kondakov wrote:
>
Hello!
As Vladimir Ozerov mentioned, the general problem here is that
VolcanoPlanner applies both logical and physical rules in a top-down
manner. It's more like the original volcano paper approach [1]:
> In the Volcano search strategy, a first phase applied all
> transformation rules to create
Danny, I am not sure how this would affect join re-order. Could you elaborate?
> On Jan 7, 2020, at 1:29 AM, Danny Chan wrote:
>
> Hi, guys, it seems that the discussion silent now, so do we have some
> conclusion that can contribute to current code, i.e. the suggested API change
> or new
Sorry for not specifying earlier, it's the pages linked below. If you
search for "mvn" and "pom.xml" you'll see the instances I mean. It
looks like the release documentation also still uses Maven.
https://calcite.apache.org/develop/
https://calcite.apache.org/docs/howto.html
--
Michael Mior
It looks like Francis recently pushed "Update website for Avatica 1.16"
which looks like
1,674 changed files with 167,295 additions and 628,539 deletions.
https://github.com/apache/calcite-site/commit/3d92029cc7718e2b66d888dc9021047879145465
Francis, can you please double-check?
Vladimir
It is still on my radar.
I have been busy these days, but will send out a design doc in a few days. But
just a heads up, the change would be larger than everyone's expected.
- Haisheng
--
发件人：Danny Chan
日 期：2020年01月07日 17:29:46
Hi Team,
We have a variable *MAX_DATETIME_PRECISION* in SqlTypeName enum which is
currently set to 3 in the code. We need to support the current_timestamp(p)
function, where 'p' can be 0 to 6.
eg: select current_timestamp(6) from employee;
This functions is present in dialects -
Teradata -
Note that the master branch documentation [1][2] seems to be updated with
respect to gradle. The problem seems to be related with what is pushed in
g...@github.com:apache/calcite-site.
[1] https://github.com/apache/calcite/blob/master/site/_docs/howto.md
[2]
Danny Chen created CALCITE-3715:
---
Summary: Add a interface to pass the table hints to RelOptTable
Key: CALCITE-3715
URL: https://issues.apache.org/jira/browse/CALCITE-3715
Project: Calcite
OK, I can try to fix this.
Feng Zhu 于2020年1月7日周二 下午8:05写道：
> I also noticed the same problem several days ago when a colleague
> complained he failed to build Calcite according to the documents on
> website.
>
>
> E.g.,
>
>
I also noticed the same problem several days ago when a colleague
complained he failed to build Calcite according to the documents on website.
E.g.,
https://calcite.apache.org/docs/howto.html#building-from-a-source-distribution
*$ git clone git://github.com/apache/calcite.git
The fact that RelOptTableImpl creates directly an EnumerableTableScan seems
to be a residue of the history (at the very beginning the class was only
used to create EnumerableTableScan operators). I guess it is also an
attempt to reduce the search space of the optimizer short-circuiting some
Can you clarify an url which has stale information?
Vladimir
I noticed when the changed was made from Maven to Gradle, the documentation
on the development page has not been updated. I can change the compilation
command, but could any IDE users update the documentation there?
--
Michael Mior
mm...@apache.org
Thanks everybody for the feedback, I submitted the report!
On Mon, Jan 6, 2020 at 9:17 PM Julian Hyde wrote:
> Is it worth mentioning that we have a new PMC chair? (Of course you’re too
> modest to mention it.)
>
> I am proud of the fact that we change the chair annually, and are now on
> our
Very few people replied to this thread so apparently there is no much
interest for setting up recurrent meetups.
On Mon, Jan 6, 2020 at 5:04 PM Muhammad Gelbana wrote:
> Did we decide a time yet ?
>
> On Sun, Dec 22, 2019 at 11:31 AM Muhammad Gelbana
> wrote:
>
> > Here are my availability
Hello!
I have a couple questions about method
VolcanoPlanner#ensureRootConverters [1]. In this method we first
calculate the difference of traits between root subset and other subsets
which belong to the same set as the root:
ImmutableList difference =
Thanks your explanation, Julian. Does it mean the optimization of this JDBC
interface may be included in next release of Calcite?
Juan Pan (Trista)
Senior DBA & PPMC of Apache ShardingSphere(Incubating)
E-mail: panj...@apache.org
On 01/7/2020 11:17，Julian Hyde
Hi, guys, it seems that the discussion silent now, so do we have some
conclusion that can contribute to current code, i.e. the suggested API change
or new abstraction ?
Or better, can someone give a design doc so that we can push and make that
implemented ?
Personally I was always looking
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