Split query processing in polybase

@inproceedings{DeWitt2013SplitQP,
  title={Split query processing in polybase},
  author={David J. DeWitt and Alan Halverson and Rimma V. Nehme and Srinath Shankar and Josep Aguilar-Saborit and Artin Avanes and Miro Flasza and Jim Gramling},
  booktitle={SIGMOD Conference},
  year={2013}
}
This paper presents Polybase, a feature of SQL Server PDW V2 that allows users to manage and query data stored in a Hadoop cluster using the standard SQL query language. Unlike other database systems that provide only a relational view over HDFS-resident data through the use of an external table mechanism, Polybase employs a split query processing paradigm in which SQL operators on HDFS-resident data are translated into MapReduce jobs by the PDW query optimizer and then executed on the Hadoop… CONTINUE READING

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Efficient Processing of Data Warehousing Queries in a Split Execution Environment

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