Chapter 1. Hadoop Service Accounts

This topic provides information about the service users for Hadoop.

HDP creates the following service users:

Note

	Note
You must always execute the `createUsers.sh` script file to ensure that these users are created by the installer. The user names for these service users cannot be modified.

You must always execute the createUsers.sh script file to ensure that these users are created by the installer.

The user names for these service users cannot be modified.

Table 1.1. Hadoop Service Accounts
HDP Service	User Name	Notes
HDFS	`hdfs`	NameNode, Secondary NameNode, and the DataNodes run as the `hdfs` user.
MapReduce	`mapred`	JobTracker, Job HistoryServer, and the TaskTrackers run as the `mapred` user.
HBase	`hbase`	HBase Master and the RegionServers run as the `hbase` user.
Hive	`hive`	Hive Metastore and HiveServer2 run as the `hive` user.
HCatalog	`hcat`	HCatalog runs as the `hcat` user. WebHCat Server also runs as the `hcat` user.
ZooKeeper	`zookeeper`	ZooKeeper server runs as the `zookeeper` user.
Oozie	`oozie`	Oozie server runs as the `oozie` user.