Presented By
O’Reilly + Cloudera
Make Data Work
29 April–2 May 2019
London, UK
Anna Szonyi

Anna Szonyi
Cloudera

Anna Szonyi is an engineering manager at Cloudera, where she established and manages the data interoperability team. Anna cares about enabling people to build high-quality software in a sustainable environment. Previously, she was a software engineer at Cloudera working on Apache Sqoop and worked on risk management systems at Morgan Stanley.

Sessions

14:05–14:45 Wednesday, 1 May 2019
Picking Parquet: Improved performance for selective queries in Impala, Hive, and Spark
Data Engineering and Architecture
 Location: S11 A
Anna Szonyi (Cloudera), Zoltán Borók-Nagy (Cloudera)
Average rating: ****.
(4.20, 10 ratings)
The Parquet format recently added column indexes, which improve the performance of query engines like Impala, Hive, and Spark on selective queries. Anna Szonyi and Zoltán Borók-Nagy share the technical details of the design and its implementation along with practical tips to help data architects leverage these new capabilities in their schema design and performance results for common workloads. Read more.