public class StructuredStreamingVersionLock
extends Object
Spark Structured Streaming just recently left "Experimental" mode in Spark 2.2.0. Its underlying interfaces have not
been subject to the same stability rules as other parts of the project since its debut in 2.0.0. Each point release
between 2.0 and 2.2 has introduced breaking changes to the api. This means that even though our 2.x artifact supports
all 2.0 and up versions of Spark, we need to ensure that users of Spark Structured Streaming are running on
Spark 2.2.0 and above and are not confused about why their streaming jobs are failing if they use versions of Spark
that do not match what we can reasonably support.