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From "gautam (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8928) Make ChaosMonkey & LoadTest tools extensible, to allow addition of more actions and policies.
Date Thu, 11 Jul 2013 08:59:48 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8928?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

gautam updated HBASE-8928:
--------------------------

    Description: 
Let me split this requirement into 2 parts:

i) ChaosMonkey
I was trying to add more tests around new actions and policies by leveraging the existing
classes nested inside ChaosMonkey.
But it turned out that some of the classes cannot be used outside, unless we make those visible
to the world.
Here is an example:
I cannot extend ChaosMonkey.Action, as the init(ActionContext context) method has package-wide
visibility.
There are other places as well which makes it impossible for anyone to extend on top of this
hierarchy.

ii) LoadTestTool
I wanted to extend this tool to define failure/pass criteria based on % of read/write failed,
rather than comparing against absolute 0. 
For that this beautiful class should mark some of its properties usable by its child, by marking
those protected.

I wanted to get unblocked here first. 
Once this gets fixed, I think I can take up a JIRA item to refactor these tools, if required.


  was:
Let me split this requirement into 2 parts:

i) ChaosMonkey
I was trying to add more tests around new actions and policies by leveraging the existing
classes nested inside ChaosMonkey.
But it turned out that some of the classes cannot be used outside, unless we make those visible
to the world.
Here is an example:
I cannot extend ChaosMonkey.Action, as the init(ActionContext context) method has package-wide
visibility.
There are other places as well which makes it impossible for anyone to extend on top of this
hierarchy.

ii) LoadTestTool
I wanted to extend this tool to define failure/pass criteria based on % of read/write failed,
rather than comparing against absolute 0. 
For that this beautiful class should mark some of its properties usable by its child, by marking
those protected.

I wanted to get unblocked here first. 
Once this gets fixed, I think I can take up a JIRA item to refactor these tools.

    
> Make ChaosMonkey & LoadTest tools extensible, to allow addition of more actions and
policies.
> ---------------------------------------------------------------------------------------------
>
>                 Key: HBASE-8928
>                 URL: https://issues.apache.org/jira/browse/HBASE-8928
>             Project: HBase
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.95.2
>            Reporter: gautam
>            Assignee: Enis Soztutar
>
> Let me split this requirement into 2 parts:
> i) ChaosMonkey
> I was trying to add more tests around new actions and policies by leveraging the existing
classes nested inside ChaosMonkey.
> But it turned out that some of the classes cannot be used outside, unless we make those
visible to the world.
> Here is an example:
> I cannot extend ChaosMonkey.Action, as the init(ActionContext context) method has package-wide
visibility.
> There are other places as well which makes it impossible for anyone to extend on top
of this hierarchy.
> ii) LoadTestTool
> I wanted to extend this tool to define failure/pass criteria based on % of read/write
failed, rather than comparing against absolute 0. 
> For that this beautiful class should mark some of its properties usable by its child,
by marking those protected.
> I wanted to get unblocked here first. 
> Once this gets fixed, I think I can take up a JIRA item to refactor these tools, if required.

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