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Posted to dev@mrunit.apache.org by "Brock Noland (Commented) (JIRA)" <ji...@apache.org> on 2012/03/10 08:14:57 UTC
[jira] [Commented] (MRUNIT-77) cannot use serializations that do
not clone into object, or serializations without no arg constructors with
reduce driver
[ https://issues.apache.org/jira/browse/MRUNIT-77?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13226782#comment-13226782 ]
Brock Noland commented on MRUNIT-77:
------------------------------------
This is great work! Thank you for fixing my bugs!
> cannot use serializations that do not clone into object, or serializations without no arg constructors with reduce driver
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: MRUNIT-77
> URL: https://issues.apache.org/jira/browse/MRUNIT-77
> Project: MRUnit
> Issue Type: Bug
> Affects Versions: 0.8.1
> Reporter: Jim Donofrio
> Assignee: Jim Donofrio
> Fix For: 1.0.0
>
>
> @Test
> public void testJavaSerialization() {
> ReduceDriver<Integer, Integer, Integer, Integer> driver = ReduceDriver.newReduceDriver(new IdentityReducer<Integer, Integer>());
> Configuration conf = new Configuration();
> conf.set("io.serializations", "org.apache.hadoop.io.serializer.JavaSerialization");
> driver.setConfiguration(conf);
> driver.withInputKey(1)
> .withInputValue(2)
> .withInputValue(3)
> .withInputValue(4)
> .withOutput(1, 2)
> .withOutput(1, 3)
> .withOutput(1, 4)
> .runTest();
> }
> The above test fails because the result of copy(next, value, conf) needs to be reassigned to value for serializations such as java serialization that dont change the copy argument. This also fails because of the lack of a no arg constructor which breaks the call to ReflectionUtils.newInstance(klass, conf)
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