How can we migrate data from Riak database to hbase? I have seen there are some riak hadoop connectors available. What is the impact of using it on production system. Any pointers?
I am not a Riak expert but according to google searches, there's a bulk import/export tool in Riak called Riak data migrator. I'd bulk export the data to flat files and then use HBase bulk load to load the data into HBase. You obviously first need to prep the files for HBase consumption, usually done with MapReduce. The best practice on the HBase side is using bulk load and pre-splitting the destination table to distribute rowkeys evenly.