Github user rxin commented on the pull request:
https://github.com/apache/spark/pull/991#issuecomment-55482578
Hey @witgo I thought about this more, and at this point I'm not sure if it
is worth it to standardize this interface. The reason is we have a lot of
"services" in Spark, but they have different ways to be initialized (some of
them would require having different initialize methods that might not fit into
the LifeCycle trait.
I'm also worried about the use of mixins with multiple traits having
default implementations. In the past that has caused trouble in Java
interoperability and binary compatibility.
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