ebay is one of largest e-commerce company in the world, providing C2C and B2C sales services via the Internet. We use Cassandra to store large tables for online query. To reduce the Cassandra load, we do offline Analytics of Cassandra table, we dump sstables to HDFS and transform to Hadoop file formats. In this session, we introduce how we build high-performance, cross datacenter Cassandra cluster for online query, and for offline Analytics, we introduce how we implement splittable input format for sstables and transform to Hadoop file formats. We also introduce how we use bulk loader tool to load data from Hadoop to Cassandra quickly.
