HBaseTestingUtility与MiniCluster一起工作吗？

Question

我有一个简单的单元测试，我想在HBaseTestingUtility MiniCluster上运行。缺少使用HBaseTestingUtility运行测试所需的传递依赖关系。我一直在跟踪NoClassDefFoundErrors，并且在打包一个jar文件时遇到了一些错误。以下是错误：

java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/test/MetricsAssertHelper at org.apache.hadoop.hbase.MiniHBaseCluster.<init>(MiniHBaseCluster.java:91)

当我在项目中的MetricsAssertHelper文件中搜索.jar时，我会在META/services目录下找到该文件：

jar tvf org/apache/hbase/hbase-hadoop2-compat/1.0.0/hbase-hadoop2-compat-1.0.0-tests.jar | grep MetricsAssertHelper 53 Sat Feb 14 19:43:40 MST 2015 META-INF/services/org.apache.hadoop.hbase.test.MetricsAssertHelper 1337 Sat Feb 14 19:43:40 MST 2015 org/apache/hadoop/hbase/test/MetricsAssertHelperImpl$MockMetricsBuilder.class 3743 Sat Feb 14 19:43:40 MST 2015 org/apache/hadoop/hbase/test/MetricsAssertHelperImpl$MockRecordBuilder.class 6689 Sat Feb 14 19:43:40 MST 2015 org/apache/hadoop/hbase/test/MetricsAssertHelperImpl.class

然而，这不是一个.class文件。我想知道MetricsAssertHelper.class文件是否从.jar文件中丢失，因为那里有一个'MetricsAssertHelperImpl.class文件‘。

下面是我的代码和mvn依赖项。错误发生在HBaseTestingUtility.startMiniCluster()调用上。

    private static HBaseTestingUtility utility; 

@Before
public void setUp() throws Exception {
    utility = new HBaseTestingUtility();
    utility.startMiniCluster();
}


    <dependencies>

    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-minicluster</artifactId>
        <version>2.5.1</version>
    </dependency>

    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-server</artifactId>
        <version>1.0.0</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-server</artifactId>
        <version>1.0.0</version>
        <type>test-jar</type>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-hadoop2-compat</artifactId>
        <version>1.0.0</version>
        <scope>test</scope>
        <type>test-jar</type>
    </dependency>

</dependencies>

Answer 1

问题是，除了hbase-hadoop-compat之外，我还需要hbase-hadoop2-compat的依赖。下面是使用JUnit MiniCluster运行HBaseTestingUtility测试所需的全部依赖项列表。

    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-minicluster</artifactId>
        <version>2.5.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-server</artifactId>
        <version>1.0.0</version>
        <type>test-jar</type>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-hadoop-compat</artifactId>
        <version>1.0.0</version>
        <scope>test</scope>
        <type>test-jar</type>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-hadoop2-compat</artifactId>
        <version>1.0.0</version>
        <scope>test</scope>
        <type>test-jar</type>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-server</artifactId>
        <version>1.0.0</version>
        <scope>test</scope>
    </dependency>