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Markus Klems, Adam Silberstein, Jianjun Chen, Masood Mortazavi, Sahaya Andrews Albert, P. P. S. Narayan, Adwait Tumbde, Brian F. Cooper · 2012
Sherpa is a large-scale distributed and globally replicated multi-tenant cloud data storage system. Sherpa scales by horizontally partitioning data into tablets and distributing these tablets across multiple servers. While Sherpa scales for increasing workload sizes by adding servers, it is vulnerable to load imbalance among tablets that cause hotspots to develop on just a few servers.