Final answer:
The correct tool for streaming SSTables to a Cassandra cluster is called 'sstableloader'. It's used for bulk loading data and is not presented as one of the provided options.
Step-by-step explanation:
The tool that streams SSTables to a live Cassandra cluster is none of the options provided (SSTStreamer, SSTLoader, SSTIngestor, SSTConnector). In Apache Cassandra, the correct tool is called sstableloader. This utility is designed to import large volumes of data into a Cassandra cluster by reading from SSTables (sorted string tables), which are the data files of Cassandra, and streaming the data into the cluster in an efficient manner. It's important to note that the name is a single word and not a combination of initials and 'Loader' as the options suggest.
This utility is particularly useful for bulk loading data or for backing up and restoring data from one cluster to another. The process involves the sstableloader connecting to the cluster and streaming data to the nodes responsible for the SSTables ranges. It considers the current cluster's partitioner and schema to distribute data correctly among the nodes. Effective use of sstableloader is essential for large-scale Cassandra data management and migration activities.