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https://issues.apache.org/jira/browse/NIFI-1022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15601598#comment-15601598
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ASF GitHub Bot commented on NIFI-1022:
--------------------------------------

Github user pvillard31 commented on the issue:

    https://github.com/apache/nifi/pull/379
  
    Hey guys,
    
    I've done some rework on this PR. After some discussions with Alluxio 
folks, it seems that there are some limitations at the moment (v1.3.0) and I've 
made some modifications to take into account those limitations.
    
    ### System properties
    At the moment, it seems it is not possible to initialize the Alluxio client 
inside NiFi without using system properties. And in any case, multi Alluxio 
clusters handling is not supported at the moment.
    
    ### Initialization
    Once the client is initialized, it cannot be unchanged unless NiFi is 
restarted. Even if provided IP/port are incorrect, the client initialization 
will not do any check. To avoid mistakes, I've added a simple check to ensure 
that something is listening at IP/port before initializing the client.
    *Improvement on Alluxio's side is tracked here: 
https://alluxio.atlassian.net/browse/ALLUXIO-2120*
    
    I've updated processors description to note it as **experimental** and let 
the users know what are the current limitations. Hopefully, this won't be a 
show stopper to get this first version into NiFi and get feedbacks from the 
community.


> Create GetTachyon and PutTachyon Processors
> -------------------------------------------
>
>                 Key: NIFI-1022
>                 URL: https://issues.apache.org/jira/browse/NIFI-1022
>             Project: Apache NiFi
>          Issue Type: New Feature
>          Components: Extensions
>            Reporter: Jeremy Dyer
>            Assignee: Pierre Villard
>            Priority: Minor
>         Attachments: Alluxio.xml
>
>
> Provide support for Apache Tachyon by implementing a GetTachyon and 
> PutTachyon processor. Having the ability to both read and write to Tachyon 
> would assist in sharing data with external applications such as Spark.



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