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System information

• TensorFlow version (you are using): 2.1
• Are you willing to contribute it (Yes/No): No

Describe your feature request

It is already possible to give actors a name: https://docs.ray.io/en/master/actors.html#named-actors and to retrieve the actor handle via ray.get_actor("some_name").
It would however be very handy to have some kind of ray.list_named_actors() API method to get a list/dict of all currently available named actors.
It can be useful for:

• Better debugging

The ability to set the language on the user creation form could be something useful on a multi user environment.

Description of the problem

As of the changes in #3160 , builds of the CRAN version of the R package with gcc now raise "unknown pragma" warnings.

CRAN does not allow the use of -Wunknown-pragmas to suppress such warnings, so we remove them with sed when building the R package.

The "bug" here is that LightGBM's CI did not catch this. That should also be fixed.

How to fix thi

as the benchmark examples

• Support multi vid_ref_expression in from clause.
• Support uuid in where clause.

issue from vesoft-inc/nebula-java#81

In some cases, the default implementations are very inefficient (e.g. Map.replaceAll and forEach fetching all entries and iterating over them locally). This was improved on member-side as the cluster version is available and in some cases we opted for using entry processors instead.

On the client-side, the cluster version is not available which meant it ends up still using the default versi

Motivation

From following resources, the search space of examples/xgboost_simple.py seems not to be practical.

• https://www.analyticsvidhya.com/blog/2016/03/complete-guide-parameter-tuning-xgboost-with-codes-python/
• https://www.youtube.com/watch?v=VC8Jc9_lNoY
• https://www.amazon.co.jp/dp/B07YTDBC3Z/

Description

Improve the search space of examples/xgboost_simple.py.

In osx/updater/updater.go, we're referencing an ancient Go package, which has moved to a new location. Right now, the updater doesn't build (should we test this on travis?).

I've noticed that some files have conflicting license statements. For instance the header of file scripts/ZoneMinder/lib/ZoneMinder/Trigger/Channel.pm claims GPL-2+ but in the end of the same file I found the following statement:

This library is free

Currently sum aggregations on numeric columns of type REAL or DOUBLE PRECISION uses a straight forward x + y operation (Double::sum).

SELECT sum(real_column) FROM tbl

There would be the [Kahan summation algorithm](https