1

我已从 Hortonworks 升级到最近的 Hadoop：

Hadoop 2.4.0.2.1.2.1-471
Subversion git@github.com:hortonworks/hadoop.git -r 9e5db004df1a751e93aa89b42956c5325f3a4482
Compiled by jenkins on 2014-05-27T18:57Z
Compiled with protoc 2.5.0
From source with checksum 9e788148daa5dd7934eb468e57e037b5
This command was run using /usr/lib/hadoop/hadoop-common-2.4.0.2.1.2.1-471.jar

在升级之前，我编写了一个 Java MRD 程序，它使用 Hive 表进行输入和输出。在以前版本的 Hadoop 中它可以工作，尽管我在编译时收到了此代码的弃用警告：

    Job job = new Job(conf, "Foo");
    HCatInputFormat.setInput(job,InputJobInfo.create(dbName, inputTableName, null));

现在，在将依赖项更新到 Hadoop 2.4.0.2.1.2.1-471 中的新 jar 并运行相同的代码后，我收到以下错误：

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hcatalog/mapreduce/InputJobInfo
    at com.bigdata.hadoop.Foo.run(Foo.java:240)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
    at com.bigdata.hadoop.Foo.main(Foo.java:272)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: java.lang.ClassNotFoundException: org.apache.hcatalog.mapreduce.InputJobInfo
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 9 more

要运行我的代码，我使用以下设置：

导出 LIBJARS=/usr/lib/hive-hcatalog/share/hcatalog/hive-hcatalog-core.jar,/usr/lib/hive/lib/hive-exec.jar,/usr/lib/hive/lib/hive- metastore.jar,/usr/lib/hive/lib/libfb303-0.9.0.jar,/usr/lib/hive/lib/jdo-api-3.0.1.jar,/usr/lib/hive/lib/antlr -runtime-3.4.jar,/usr/lib/hive/lib/datanucleus-api-jdo-3.2.6.jar,/usr/lib/hive/lib/datanucleus-core-3.2.10.jar

export HADOOP_CLASSPATH=/usr/lib/hive-hcatalog/share/hcatalog/hive-hcatalog-core.jar,/usr/lib/hive/lib/hive-exec.jar,/usr/lib/hive/lib/hive- metastore.jar,/usr/lib/hive/lib/libfb303-0.9.0.jar,/usr/lib/hive/lib/jdo-api-3.0.1.jar,/usr/lib/hive/lib/antlr -runtime-3.4.jar,/usr/lib/hive/lib/datanucleus-api-jdo-3.2.6.jar,/usr/lib/hive/lib/datanucleus-core-3.2.10.jar

为什么我得到 java.lang.NoClassDefFoundError: org/apache/hcatalog/mapreduce/InputJobInfo 的任何想法？

4

2 回答 2

0

我认为您应该在 pom.xml 中添加以下依赖项。

<dependency>
     <groupId>org.apache.hcatalog</groupId>
     <artifactId>hcatalog-core</artifactId>
     <version>0.11.0</version>
</dependency>
于 2014-07-24T07:07:37.383 回答
0

我确实遇到了完全相同的问题。在您的情况下，您将需要以下 jars 到您的类路径：

1. jdo2-api-2.3-eb.jar,
2. libthrift-0.9.0.jar，
3. datanucleus-rdbms-3.2.6.jar，
4. hive-ant-0.13.0.jar
于 2015-09-06T15:00:11.007 回答