In the previous article, we discussed how we evaluated Cloud Bigtable for Sift, how we prepared our systems for the zero downtime migration from HBase, and the overall data migration strategy. In this post, we present the unknown unknowns we ran into during our data migration. As in the previous articles, the target audience of […] The post Lessons Learned From Bigtable Data Migration (Part 4/4) appeared first on Sift Engineering Blog .