Apache Flink on YARN
Flink jobs are executed as YARN applications in Cloudera Streaming Analytics.
HDFS is used to store recovery and log data, while ZooKeeper is used for high availability coordination for jobs. In a standard layout, an Apache Kafka cluster is often located close to the YARN cluster executing the Flink cluster.
The Flink Gateway is collocated with YARN and HDFS Gateways. The Flink HistoryServer is collocated with an HDFS role, which can be either an active role or a Gateway. Use the following general service layout when collocating Flink roles and dependencies.