Blocking DStream.forEachRDD()

[Corey Nolet]

Is this somehtign I can do. I am using a FileOutputFormat inside of the
foreachRDD call. After the input format runs, I want to do some directory
cleanup and I want to block while I'm doing that. Is that something I can
do inside of this function? If not, where would I accomplish this on every
micro-batched itnerval?