View application history - Amazon EMR
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View application history

You can view Spark History Server and YARN timeline service application details with the cluster's detail page in the console. Amazon EMR application history makes it easier for you to troubleshoot and analyze active jobs and job history.


To augment the security for the off-console applications that you might use with Amazon EMR, the application hosting domains are registered in the Public Suffix List (PSL). Examples of these hosting domains include the following:,, For further security, if you ever need to set sensitive cookies in the default domain name, we recommend that you use cookies with a __Host- prefix. This helps to defend your domain against cross-site request forgery attempts (CSRF). For more information, see the Set-Cookie page in the Mozilla Developer Network.

The Application user interfaces section of the Applications tab provides several viewing options, depending on the cluster status and the applications you installed on the cluster.

  • Off-cluster access to persistent application user interfaces – Starting with Amazon EMR version 5.25.0, persistent application user interface links are available for Spark UI and Spark History Service. With Amazon EMR version 5.30.1 and later, Tez UI and the YARN timeline server also have persistent application user interfaces. The YARN timeline server and Tez UI are open-source applications that provide metrics for active and terminated clusters. The Spark user interface provides details about scheduler stages and tasks, RDD sizes and memory usage, environmental information, and information about the running executors. Persistent application UIs are run off-cluster, so cluster information and logs are available for 30 days after an application terminates. Unlike on-cluster application user interfaces, persistent application UIs don't require you to set up a web proxy through a SSH connection.

  • On-cluster application user interfaces – There are a variety of application history user interfaces that can be run on a cluster. On-cluster user interfaces are hosted on the master node and require you to set up a SSH connection to the web server. On-cluster application user interfaces keep application history for one week after an application terminates. For more information and instructions on setting up an SSH tunnel, see View web interfaces hosted on Amazon EMR clusters.

    With the exception of the Spark History Server, YARN timeline server, and Hive applications, on-cluster application history can only be viewed while the cluster is running.