services.hadoop.hdfs.namenode.formatOnInit

Format HDFS namenode on first start. This is useful for quickly spinning up ephemeral HDFS clusters with a single namenode. For HA clusters, initialization involves multiple steps across multiple nodes. Follow this guide to initialize an HA cluster manually: https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html

Type

boolean

Default

false

Declared

<nixpkgs/nixos/modules/services/cluster/hadoop/hdfs.nix>