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Impala: Real-Time Query Engine for Hadoop

Impala is an open-source tool by Cloudera offering ad hoc real-time queries for Hadoop, based on Google's 2010 Dremel paper. It enables direct data access and upcoming updates promise enhanced performance with columnar storage. Learn more at Semtech Solutions.

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Impala: Real-Time Query Engine for Hadoop

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  1. Impala • What is it ? • How does it work ? • Performance • Formats • Architecture www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  2. Impala – What is it ? • Adhoc real time query for Hadoop • Open source • Developed by Cloudera • Based on Google 2010 dremel paper • Direct data access via Impala engine • Future Hadoop parquet update will • Add columnar binary storage to Hadoop • Improve Impala performance www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  3. Impala – How does it work ? • Direct data access • Query planning / coordination on data nodes • Node based query engine • Low latency • Perfomance imrovement • Query data on HDFS or Hbase • Uses same Hive QL syntax ( SQL like )‏ • Has the Hue GUI • Allows table joins and aggregation www.semtech-solutions.co.nz info@semtech-solutions.co.nz

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