In response to my recent blog posting Immutable Java Objects, Matt brought up a good point of discussion related to making Java classes truly immutable by declaring them as final so that they cannot ...

Immutable objects are highly desirable. Because an immutable object’s state cannot be changed, they are particularly useful in concurrent environments. Immutable options can simplify code and reduce ...

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I have launched a spark-yarn cluster running spark 2.4 scala 2.11.12 hadoop 2.7 When i have tried to run these in amm, I have the exception of ClassCastException: 19/08/17 13:18:59 INFO SparkContext: ...