Hi all!
A few weeks back we introduced a new way to define configuration parameters.
I would like to encourage everyone to use that new pattern for all new
options that we create, and lazily migrate existing parameters to that
pattern.
The current way of maintaining keys, defaults, and deprecated keys manually
in the "ConfigConstants" class started to become unmaintainable.
The new approach is based on the "ConfigOption" class and defines keys,
deprecated keys, and default values together. For example:
ConfigOption<Double> threshold = ConfigOptions
.key("cpu.utilization.threshold")
.defaultValue(0.9).
.withDeprecatedKeys("cpu.threshold");
Have a look at this class for a complete example:
https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/configuration/HighAvailabilityOptions.java
Greetings,
Stephan
