Databricks Inc.

Xi Liang

Yannis Papakonstantinou

Vuk Ercegovac

Michael Paul Armbrust

Mukul Murthy

Nitin Sharma

John Sismanis

Min Yang

Paul Lappas

Joseph Torres

A system receives ETL specification for processing stream data, including a transform operation represented using a database query specification. The system generates a dataflow graph of a sequence of database queries by decomposing the database query into a first database query that generates an intermediate results table, and a second database query that receives as input the intermediate results table and outputs data used for performing the transform operation. The system executes the sequence of database queries for performing the transform operation on stream data received from the source. When receiving an incremental data set, the system determines an output change set based on the received incremental data set by traversing an execution plan and processing each operator in the execution plan, and computing a change set of a particular operator from the change sets output by the one or more other operators based on the incremental data set.

Incremental execution of extract, transform, load process using microtechniques architecture

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Santa Clara, CA, United States of America

Xi Liang