Jakub created MRUNIT-159:
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Summary: MRUnit not compiling with hadoop 0.23.3
Key: MRUNIT-159
URL: https://issues.apache.org/jira/browse/MRUNIT-159
Project: MRUnit
Issue Type: Bug
Affects Versions: 1.0.0
Reporter: Jakub
Priority: Critical
I tried to write test using mrunit 1.0.0 ( i need to init cache, which is
unavaliable in already relased versions)
when I run my code I get:
java.lang.IncompatibleClassChangeError: Found interface
org.apache.hadoop.mapreduce.TaskInputOutputContext, but class was expected
at
org.apache.hadoop.mrunit.internal.mapreduce.AbstractMockContextWrapper.createCommon(AbstractMockContextWrapper.java:53)
I read other issues like https://issues.apache.org/jira/browse/MRUNIT-56 and
decided to recompile mrunit.
I've downloaded source, and then:
mvn install -DskipTests
Build succes
mvn install -DskipTests -Dhadoop.version=2
Build success
tried both output version with my code:
mrunit-1.0.0-SNAPSHOT-hadoop1.jar
mrunit-1.0.0-SNAPSHOT-hadoop2.jar
but was still getting exception
I've changed pom.xml specificHadoopVersion to:
<specificHadoopVersion>0.23.3</specificHadoopVersion>
and then:
mvn clean
mvn install -DskipTests -Dhadoop.version=2
and there are compilation errors:
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR]
/home/kuba/studia/magisterka/mrunit/src/main/java/org/apache/hadoop/mrunit/TestDriver.java:[464,24]
error: cannot find symbol
[ERROR] class DistributedCache
/home/kuba/studia/magisterka/mrunit/src/main/java/org/apache/hadoop/mrunit/TestDriver.java:[478,24]
error: cannot find symbol
[INFO] 2 errors
that's because initDistributedCache method uses
DistributedCache.addLocalFiles(), which is unavaliable in Hadoop 0.23.3
I tried to fix it, but I'm new to hadoop ant havent succeed yet, any help,
please?
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