mrunit的继任者是什么？ [英] What's the successor of mrunit?

问题描述

今天我发现ASF退役的mrunit（请参阅 https://blogs.apache.org/foundation/entry/ the_apache_news_round_up85 和 https://issues.apache.org/jira/browse/HADOOP-3733和主页）。除了闲置之外，没有理由给出，所以我想应该有一个替代方案？

Today I found out that the ASF retired mrunit (see https://blogs.apache.org/foundation/entry/the_apache_news_round_up85 and https://issues.apache.org/jira/browse/HADOOP-3733 and the homepage itself). Other than "inactivity" there was no reason given, so I guess there has to be an alternative?

应该用什么来代替mrunit来在未来对mapreduce作业进行单元测试？

What's supposed to be used instead of mrunit to unit test mapreduce jobs in the future?

推荐答案

我相信退休的原因是Mockito已经可以处理你需要的单元测试你的mapper / redurs。您只需要模拟Context，Counter和HBase KeyValue，然后您可以将一行（以Result对象的形式）传递给映射器，并检查发射的键/值是否正确。

I believe the reason for this retirement is the realization that Mockito already can handle what you need to unit test your mapper/reducers. All you need is to mock your Context, Counter and HBase KeyValue and you can then pass in a row (in the form of the Result object) to a mapper and check if the key/value emitted is correct.

仅供参考 - 实际上，我没有使用MRUnit和PowerMock提供的任何帮助，使用此方法可以完美地完成MR单元测试。

FYI - I actually got my MR unit tests working perfectly using this approach without any assistance from MRUnit and PowerMock.

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