The Hadoop Application Timeline Server collects basic information about completed application processes. The Timeline Server also provides information about completed and running YARN applications.
The Grid Manager starts the Application Timeline Server in the Yarn configuration by default.
The Blaze engine uses the Application Timeline Server to store the Blaze Job Monitor status. On Hadoop distributions where the Timeline Server is not enabled by default, the Grid Manager attempts to start the Application Timeline Server process on the current node.
The Grid Manager stores Application Timeline Server logs for each user under the logs directory that is configured in the Hadoop connection property infagrid.node.local.root.log.dir.
For example, if infagrid.node.local.root.log.dir is configured with the path
, then logs for user User1 are saved in
If you do not enable the Application Timeline Server on secured Kerberos clusters, the Grid Manager attempts to start the Application Timeline Server process in HTTP mode.