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From mattf-horton <...@git.apache.org>
Subject [GitHub] incubator-metron issue #408: METRON-608 Mpack to install a single-node test ...
Date Wed, 25 Jan 2017 07:58:25 GMT
Github user mattf-horton commented on the issue:

    https://github.com/apache/incubator-metron/pull/408
  
    Hi @dlyle65535 , from a design perspective, I totally agree that we should have a single
MPack that works on any size cluster, and I hope to replace both the 4(+)-node and single-node
versions in the future with a more general solution.  I even have a prototype of such.  My
reasons for proceeding with the split-off version at this time were entirely pragmatic, due
to time pressure:
    
    - I really needed a single-node that works with Ambari, for testing other PRs.  
    - I spent several days trying to make Elasticsearch work on a single node installation,
while retaining the generality of the multi-node case, but couldn't make it work.  This chewed
up a lot of time.
    - I put together a unified Mpack that used two different template files for Elasticsearch,
depending whether it was for a single-node or multi-node install.  That worked just fine,
on the surface, but was clearly going to require in-depth testing of 1, 2, 3, and 4 node cases.
 I do not currently have time to thoroughly test all the special cases.
    - Doing it this way I only had to test the single-node case, which was fairly fast.
    - Having made one that works, I'd like to make it available to others.
    - Now, if it is not accepted into the code, the high rate of change in metron-deployment
will soon obsolete it.
    
    That's pretty much it.  It's a throw-away, but not until we do the work of actually producing
the generalized solution and testing it thoroughly.  Which I evaluate as lower priority than
a number of other more urgent needs.  Thanks.


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