At this moment relu_layer op doesn't allow threshold configuration, and legacy RELU op allows that.
We should add configuration option to relu_layer.

Describe the bug

Serverless: Deprecation warning: Variables resolver reports following resolution errors:
              - Cannot resolve variable at "provider.environment.CUBEJS_APP": Value not found at "self" source,
              - Cannot resolve variable at "functions.cubejsProcess.events.0.event.resource": Value not found at "self" source
            From a next major this will be

Hi, if my spark app is using 2 storage type, both S3 and Azure Data Lake Store Gen2, could I put spark.delta.logStore.class=org.apache.spark.sql.delta.storage.AzureLogStore, org.apache.spark.sql.delta.storage.S3SingleDriverLogStore

Thanks in advance

Travis CI tests are very flaky lately and need some additional check/debugging.

Some of the tests, which are failing:

[info] - should start job, return JobStarted (async) and invoke callback *** FAILED *** (161 milliseconds)
[info]   0 was not equal to 1 (JobManagerActorSpec.scala:487)
[info]   org.scalatest.exceptions.TestFailedException:
[info]   at org.scalatest.MatchersHelper$.

I have a simple regression task (using a LightGBMRegressor) where I want to penalize negative predictions more than positive ones. Is there a way to achieve this with the default regression LightGBM objectives (see https://lightgbm.readthedocs.io/en/latest/Parameters.html)? If not, is it somehow possible to define (many example for default LightGBM model) and pass a custom regression objective?