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https://issues.apache.org/jira/browse/HADOOP-1257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12489098
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Tom White commented on HADOOP-1257:
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> Tom, haven't you done something similar with your https://
> computefarm.dev.java.net/ project?
Yes, this was some time ago now, but the basic idea was to extend JUnit (this
in itself was hard since JUnit 3 was not really written for extensibility :) to
distribute test cases to worker machines using JavaSpaces. The idea was to
distribute them in order to get the whole suite to run faster, not to run each
test a number of times in order to examine failure rates.
One of the nice things was that you didn't have to install your tests on the
workers since Jini code mobility ensured the bytecodes were downloaded as
necessary. However you did need to make sure your tests were Serializable...
More at https://computefarm.dev.java.net/samples.html and
https://computefarm.dev.java.net/source/browse/computefarm/trunk/samples/src/java/org/tiling/computefarm/samples/junit/.
I think this would be a nice general application of Hadoop, and we'd be able to
avoid the restriction on tests having to be Serializable.
However, for the immediate problem of reducing test execution time on Hudson,
Doug's suggestion of writing a custom ant task sounds like it would be more
appropriate.
> a distributed junit test runner
> -------------------------------
>
> Key: HADOOP-1257
> URL: https://issues.apache.org/jira/browse/HADOOP-1257
> Project: Hadoop
> Issue Type: New Feature
> Components: test
> Affects Versions: 0.12.3
> Reporter: Owen O'Malley
> Assigned To: Owen O'Malley
>
> It would be nice to have a distributed junit runner that would run 100
> instances of each test a separate map, and use counters to count how many
> times each test passed/failed/hung.
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