
Hadoop • 93
YARN: YARN simplies and federates the task of executing MapReduce
runs by adding a scheduler and an applications manager.
Impala: Cloudera Impala is a massively parallel processing (MPP) SQL query
engine that runs natively in Apache Hadoop. e Apache-licensed, open-source
Impala project combines modern, scalable parallel database technology with
the power of Hadoop, enabling users to directly query data stored in HDFS and
Apache HBase without requiring data movement or transformation.
HBase: HBase hosts exceptionally large tables (billions of rows and mil-
lions of columns) over the Hadoop distributed architecture.
MapReduce: MapReduce ...