Corona is an open-source scheduling framework used on Apache Hadoop based data infrastructure. Corona was initially designed by Facebook to cope up with a large amount of current, incoming data and the queries processed by each data cluster. Corona is considered an advancement or successor to Hadoop MapReduce.
Engineer-to-Order Enterprise Resource Planning (ETO ERP) is a class of Enterprise Resource Planning (ERP) systems designed to support manufacturer requirements for the unique engineering designs of their customer products. Specific processes are involved in each phase of product manufacturing, including estimates, materials, engineering changes, cost allocation, tracking, communication and customer interaction. Most manufacturing organizations have unique processes, size variations, resources and end products. Thus, not all manufacturing processes are suited to a standard ERP.
Supplier and Make to Order (MTO) manufacturer interaction processes stand in sharp contrast to those between suppliers and ETO manufacturers. Supplier and ETO manufacturer interactions are more critical, as these customers order unique sets and bills of materials. Because ETO materials are project specific and not frequently used or ordered, they usually have long lead times (months or years), compared to MTO manufacturers (days or weeks). Tight scheduling is expected with no scope of error.
Key ETO ERP characteristics include:
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