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https://issues.apache.org/jira/browse/HADOOP-6332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869405#action_12869405
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Konstantin Boudnik commented on HADOOP-6332:
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Right, agree. Makes sense. Are we going to fully isolate MR from Common? I.e.
the two won't have even jar dependencies? Cause this is exactly how MR (HDFS)
parts of test framework depends on Common part of the framework - via a jar
dependency.
If you suggest to cut this off then we'll have to introduce another one from
the test framework's artifact instead. it doesn't appear very natural to me in
case of a software system and its embed test framework, but it can done of
course.
> Large-scale Automated Test Framework
> ------------------------------------
>
> Key: HADOOP-6332
> URL: https://issues.apache.org/jira/browse/HADOOP-6332
> Project: Hadoop Common
> Issue Type: New Feature
> Components: test
> Affects Versions: 0.21.0
> Reporter: Arun C Murthy
> Assignee: Konstantin Boudnik
> Fix For: 0.22.0
>
> Attachments: 6332-phase2.fix1.patch, 6332-phase2.fix2.patch,
> 6332-phase2.patch, 6332.patch, 6332.patch, 6332.patch, 6332_v1.patch,
> 6332_v2.patch, HADOOP-6332-MR.patch, HADOOP-6332-MR.patch,
> HADOOP-6332.0.22.patch, HADOOP-6332.0.22.patch, HADOOP-6332.0.22.patch,
> HADOOP-6332.0.22.patch, HADOOP-6332.0.22.patch, HADOOP-6332.0.22.patch,
> HADOOP-6332.0.22.patch, HADOOP-6332.0.22.patch, HADOOP-6332.patch,
> HADOOP-6332.patch
>
>
> Hadoop would benefit from having a large-scale, automated, test-framework.
> This jira is meant to be a master-jira to track relevant work.
> ----
> The proposal is a junit-based, large-scale test framework which would run
> against _real_ clusters.
> There are several pieces we need to achieve this goal:
> # A set of utilities we can use in junit-based tests to work with real,
> large-scale hadoop clusters. E.g. utilities to bring up to deploy, start &
> stop clusters, bring down tasktrackers, datanodes, entire racks of both etc.
> # Enhanced control-ability and inspect-ability of the various components in
> the system e.g. daemons such as namenode, jobtracker should expose their
> data-structures for query/manipulation etc. Tests would be much more relevant
> if we could for e.g. query for specific states of the jobtracker, scheduler
> etc. Clearly these apis should _not_ be part of the production clusters -
> hence the proposal is to use aspectj to weave these new apis to
> debug-deployments.
> ----
> Related note: we should break up our tests into at least 3 categories:
> # src/test/unit -> Real unit tests using mock objects (e.g. HDFS-669 &
> MAPREDUCE-1050).
> # src/test/integration -> Current junit tests with Mini* clusters etc.
> # src/test/system -> HADOOP-6332 and it's children
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