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From davidyan74 <...@git.apache.org>
Subject [GitHub] incubator-apex-core pull request: APEXCORE-457 Added web service s...
Date Mon, 16 May 2016 23:27:09 GMT
Github user davidyan74 commented on a diff in the pull request:

    --- Diff: docs/security.md ---
    @@ -74,6 +74,32 @@ The snippet below shows the how the credentials can be specified in
the configur
     The property `dt.authentication.principal` specifies the Kerberos user principal and
`dt.authentication.keytab` specifies the absolute path to the keytab file for the user.
    +### Webservices security
    +Alongside every Apex application is an application master process running called Streaming
Container Manager (STRAM). STRAM manages the application by handling the various control aspects
of the application such as orchestrating the execution of the application on the cluster,
playing a key role in scalability and fault tolerance, providing application insight by collecting
statistics among other functionality.
    +STRAM provides a web service interface to introspect the state of the application, its
various components and to make dynamic changes to the applications. Some examples of supported
functionality are getting resource usage and partition information of various operators, getting
operator statistics and changing properties of running operators.
    --- End diff --
    "STRAM provides a web service interface to introspect the state of the application and
its components, and also to make dynamic changes to the applications."

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