Which version of HBase are you running? If we have a node or two go down in our cluster, HBase is completely unaffected. Recoveries can take up to a few minutes, in the old ages it took hours.
I know that MTTR (mean time to recovery) is being worked on together by several large companies to get down to seconds.
I know that MTTR (mean time to recovery) is being worked on together by several large companies to get down to seconds.