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Instantiate lazy val which depends on runtime parameter in concurrent env
I need to instantiate MyHttpClient as Singleton. MyHttpClient is used by multiple threads.
Solution below works, but it's ugly and should have issue with endpoint, I just didn't hit it yet.
endpoint ...
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Difference when serializing a lazy val with or without @transient
Working on spark, sometimes I need to send a non-serializable object in each task.
A common pattern is @transient lazy val, e.g
class A(val a: Int)
def compute(rdd: RDD[Int]) = {
// lazy val ...
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