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This document describes the deployment and use process of Flink in Hadoop and Zookeeper environments. First, you need to deploy and start Hadoop and Zookeeper in advance, then download Flink and configure environment variables and Hadoop paths, then create a directory on HDFS, finally start and submit the Flink job in Per-Job or Application mode through YARN, and verify the running status of the task through YARN Web UI and Flink Web UI.