Implementation of change data capture in ETL process for data warehouse using HDFS and apache spark
Denny Denny, I. Putu Medagia Atmaja, Ari Saptawijaya, Siti Aminah · 2017
This study aims to increase ETL process efficiency »ud reduce processing time by applying the method of Change Data Capture (CDC) in distributed system using Hadoop Distributed file System (HDFS) and Apache Spark in the data warehouse of Learning Analytics system of Universitas Indonesia. Usually, increases in I lie number of records in the data source result in an increase in ETL processing time for the data warehouse system. This condition occurs as a result of inefficient ETL process using the full load method. Using the tull load method, ETL has to process the same number of records as the number of records in the data sources. The proposed ETL model design with the application of CDC method using HDFS and Apache Spark can reduce the amount of data in the ETL process. Consequently, the process becomes more efficient and the ETL processing time Is reduced approximately 53% in average.