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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-14) Transition from full Accumulo mocking
Date Tue, 27 Nov 2012 21:18:58 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-14?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13504956#comment-13504956
] 

Josh Elser commented on ACCUMULO-14:
------------------------------------

I wanted to leave some notes about what I'd like to see from MiniAccumuloCluster (perhaps
this is a separate discussion..). I will admit that I haven't dug through the source code
yet.

A short wishlist of things I'd like to see from MiniAccumuloCluster (or some mocking framework
which uses it):

* Smoke-test framework for iterators (API to run an iterator over data asserting the same
results while varying things like server-side memory buffer, multiple tservers, adding/removing
split points, etc)
* The ability to run multiple tservers in memory on a single host
* Table configurations and tablet hosting/migration/etc works when having multiple tservers

It would be cool to even make some sort of Maven plugin/archetype that one could include in
their own Maven project to do "more realistic" testing against Accumulo instead of necessarily
depending on a test module in Accumulo? Just a thought, I'm not sure of the best way to bundle
this.

                
> Transition from full Accumulo mocking
> -------------------------------------
>
>                 Key: ACCUMULO-14
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-14
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: client
>            Reporter: Jesse Yates
>            Assignee: Eric Newton
>             Fix For: 1.5.0
>
>         Attachments: java_ACCUMULO-14-start-formatted.patch, java_ACCUMULO-14-start.patch
>
>
> Original discussion present here:http://mail-archives.apache.org/mod_mbox/incubator-accumulo-dev/201110.mbox/%3CCAGUtCHrN3p-7C8Uz7eT0Ze4L0ORzDj1f-x-JWdyrLc=Kx=o8ZQ@mail.gmail.com%3E
> Jesse Yates: "Maintaining a real instance and a mock instance ends up creating a lot
of extra work for dev's by ensuring that there impls are kept synchronized....[using a real]
instance of Accumulo running on the local file system. This would mean less work in the long
run to maintain a separate instance and better testing for users and new features."
> Keith Turner: "its very fast to create a mock instance which means that unit test run
very quickly...[and] its all in process which is useful for debugging...making mock leverage
more of the actual accumulo code, but possibly keep it in process for speed and debugging."
> This ticket is to track the discussion and development of a less mocked test instance
of accumulo, that relies more heavily on the actual implementation, rather than parallel mocking
features.

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