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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (METRON-744) Allow Stellar functions to be loaded from HDFS
Date Fri, 03 Mar 2017 01:53:45 GMT

    [ https://issues.apache.org/jira/browse/METRON-744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15893562#comment-15893562
] 

ASF GitHub Bot commented on METRON-744:
---------------------------------------

Github user cestella commented on the issue:

    https://github.com/apache/incubator-metron/pull/468
  
    Ok, in the aftermath of the API PR, I added support for properly setting up stellar to
read dependencies from HDFS for the API.  As such, I validated the API continues to work by:
    * Installing the REST endpoint in vagrant as described in the `metron-rest` documentation
    * Starting the service
    * Running `curl -u user:password -X GET --header 'Accept: application/json' 'http://node1:8082/api/v1/stellar/list/functions'`
to list the functions and validating that `NOW` is showed among them.
    
    Here is the excerpt that I pasted from swagger:
    ```
    {
        "name": "NOW",
        "description": "Right now!",
        "params": [],
        "returns": "Timestamp"
      },
    ```
    
    @merrimanr anything else you think I should validate?


> Allow Stellar functions to be loaded from HDFS
> ----------------------------------------------
>
>                 Key: METRON-744
>                 URL: https://issues.apache.org/jira/browse/METRON-744
>             Project: Metron
>          Issue Type: New Feature
>            Reporter: Casey Stella
>
> The benefit of Stellar is that adding new functionality is as simple as providing a Jar.
 This enables people who want to integrate with Metron to easy add enrichments or other functionality.
 The snag currently with this is that we provide a single jar, so all stellar functions that
we have available must be dependencies of the main jar that drives the topology plus what
local directories we can configure via the storm configs.  This makes the process of adding
3rd party jars not as easy as it could be.
> Adjust the the following to additionally load classes from a location in HDFS /apps/metron/stellar
using something like accumulo ( https://accumulo.apache.org/blog/2014/05/03/accumulo-classloader.html)
> * Profiler topology
> * Parser topology
> * Enrichment topology
> * Enrichment Flat file loader
> * Enrichment MR loader



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