What if we wanted to run HBase in multiple datacenters? Typically, it is not recommended to run a single HBase cluster stretched across datacenters. What we want to do instead is to set up independent HBase clusters in each datacenter. If this is what we want, how do we ensure that the same data is available from both clusters? We've a couple of options.
We can have the application do a dual ingest. In other words, the application is aware that multiple HBase clusters exist. It explicitly connects to each of the HBase clusters and stores the data. In this setup, if one or more clusters are unavailable, it is the responsibility of the application to keep track of what data has been written to what clusters and ensure ...
