I'd highly recommend against it. Spark 2.0 is very different from Spark 1.x. In my experience Spark is not super mature so books become outdated very fast. I mostly relied on their official documentation and API pages when I worked with it.
But if you want a book just make sure that it's a latest one. I found that Spark in Action uses the 2.0 version so that would be a good one.
I'd highly recommend against it. Spark 2.0 is very different from Spark 1.x. In my experience Spark is not super mature so books become outdated very fast. I mostly relied on their official documentation and API pages when I worked with it.
But if you want a book just make sure that it's a latest one. I found that Spark in Action uses the 2.0 version so that would be a good one.