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System information

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

When running in cluster mode, passing references does not work, e.g.,:

auto r3 = Ray::Task(Return1).Remote();
auto r4 = Ray::Task(Plus1, r3).Remote(); // passing r3 as reference argument

CC @SongGuyang

• I have verified my script runs in a clean environment and reproduces the issue.
• I have verified the issue also occurs with the [latest wheels](https://docs.ray.io/en

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

What would you like to be added: As title

Why is this needed: All pruning schedule except AGPPruner only support level, L1, L2. While there are FPGM, APoZ, MeanActivation and Taylor, it would be much better if we can choose any pruner with any pruning schedule.

**Without this feature, how does current nni

• 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

See optuna/optuna#1913.

Some type hints are not complying to the latest mypy == 0.790 and should be addressed.

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