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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6332) Large-scale Automated Test Framework
Date Tue, 17 Nov 2009 17:07:39 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12778994#action_12778994
] 

Steve Loughran commented on HADOOP-6332:
----------------------------------------

I could do mon tue or wed next week, that is 23, 24 or 25 of November, at or after 20:00 GMT,
which is what, midday pacific? We could start with getting everyone interested in the problem
to talk about what their use cases/needs are, and then discuss how to go about meeting them

I'll be connecting from home in the UK; assuming the majority of participants in the it's
probably best if someone in the bay area hosts the Skype meeting for lower latency and higher
reliability. Any volunteers?



> 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
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>             Fix For: 0.21.0
>
>
> 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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