Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/10205#issuecomment-189475703
Ok, here's my current prototype. Using the same example as above:
Basically, I came up with a builder pattern, where you define the type at
the end. For example, for an int config:
private[spark] val DYN_ALLOCATION_MIN_EXECUTORS =
ConfigBuilder("spark.dynamicAllocation.minExecutors")
.doc("This is the doc string")
.internal()
.intConf
.withDefault(0)
Or the same config without a default, meaning it would be an Option[Int]:
private[spark] val DYN_ALLOCATION_MIN_EXECUTORS =
ConfigBuilder("spark.dynamicAllocation.minExecutors")
.doc("This is the doc string")
.internal()
.intConf
.optional
Although I haven't added the code, you could support validators by adding
something like:
private[spark] val DYN_ALLOCATION_MIN_EXECUTORS =
ConfigBuilder("spark.dynamicAllocation.minExecutors")
.doc("This is the doc string")
.internal()
.intConf
.validator(_ > 0)
.optional
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