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Deep Dive of ADBMS Migration to Apache Spark—Use Cases Sharing

Deep Dive of ADBMS Migration to Apache Spark—Use Cases Sharing

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eBay has been using enterprise ADBMS for over a decade, and our team is working on batch workload migration from ADBMS to Spark in 2018. There has been so many experiences and lessons we got during the whole migration journey (85% auto + 15% manual migration) – during which we exposed many unexpected issues and gaps between ADBMS and Spark SQL, we made a lot of decisions to fulfill the gaps in practice and contributed many fixes in Spark core in order to unblock ourselves. It will be a really interesting and should be helpful sharing for many folks especially data/software engineers to plan and execute their migration work. And during this session we will share many very specific issues each individually we encountered and how we resolve & work-around with team in real migration processes.
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