.. _hue:

HUE: A nice graphical interface to Hadoop
=========================================

Hadoop User Experience (HUE) allows you to use a web user interface to perform common tasks like submitting new jobs, monitoring existing ones, execute Hive queries or browsing the HDFS filesystem.

The HUE interface can be accessed through the `BD|CESGA WebUI <https://bigdata.cesga.es>`_.

You just have to follow the link to HUE and then login using your credentials (the same as for FT supercomputer).

.. figure:: _static/screenshots/hue-login.png
    :align: center

    The HUE login page: select LDAP and enter your credentials.

Once inside HUE you can use it to launch Hive queries and display the results in a graphical way.

.. figure:: _static/screenshots/hue-hive.png
    :align: center

    Launching HiveQL queries from HUE.

Using HUE you also have a quick Web UI to explore HDFS.

.. figure:: _static/screenshots/hue-hdfs.png
    :align: center

    Exploring HDFS from HUE.

You can also use HUE to monitor your jobs in YARN:

.. figure:: _static/screenshots/hue-jobs-running.png
    :align: center

    Monitoring jobs using HUE.

And from the properties tab you can get the link to the tracking URL of the job:

.. figure:: _static/screenshots/hue-jobs-properties-url.png
    :align: center

    Getting the tracking URL of a given job in the properties tab.

Following that link will give you all the information about your job, for example in case of a Spark job you will access to the Spark UI:

.. figure:: _static/screenshots/hue-jobs-to-sparkui.png
    :align: center

    The Spark UI showing details of a given job.