Options to support 'NoOp' when key collisions occur during an append.#275

pennyclip wants to merge 2 commits intoRedisLabs:masterRedisLabs/spark-redis:masterfrom

pennyclip:feature/support-no-op-on-key-collisionpennyclip/spark-redis:feature/support-no-op-on-key-collisionCopy head branch name to clipboard