This document discusses strategies for reducing the mean time to recovery (MTTR) in HBase to below 1 minute. It outlines how HBase recovery works and key components involved. Some techniques discussed to reduce MTTR include faster failure detection by lowering Zookeeper timeouts, improving parallelism in region reassignment, and rewriting the data recovery process in HBase 0.96. However, the document notes that high MTTR is often due to downtime from HDFS data replication when a datanode fails along with a regionserver.