Resolving NoClassDefFoundError: org/apache/spark/Logging exception

Question

我正在试用 hbase-spark 连接器。首先，我正在尝试 this 代码。

我的 pom 依赖项是：

<dependencies>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-core_2.11</artifactId>
        <version>2.0.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-sql_2.11</artifactId>
        <version>2.0.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-spark</artifactId>
        <version>2.0.0-alpha4</version>
    </dependency>
</dependencies>

我在运行代码时遇到以下异常：

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/spark/Logging at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at java.net.URLClassLoader.access0(URLClassLoader.java:73) at java.net.URLClassLoader.run(URLClassLoader.java:368) at java.net.URLClassLoader.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.hadoop.hbase.spark.JavaHBaseContext.(JavaHBaseContext.scala:46) at com.myproj.poc.sparkhbaseneo4j.App.main(App.java:71) Caused by: java.lang.ClassNotFoundException: org.apache.spark.Logging at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 14 more

com.myproj.poc.sparkhbaseneo4j.App.main(App.java:71) 是 github 代码中的 line 67。

我检查了。它说我应该包含所有库的相同版本。早些时候，我的 pom.xml 中有 2.3.0 版本的 spark 库。但我意识到 hbase-spark 有最新版本 2.0.0。所以我将所有 spark 库的版本降级为 2.0.0。但我仍然遇到同样的异常。

或者我是否必须坚持使用 1.X.X 版本才能使用它，因为答案说它在 1.5.2 版本之后被删除了？

Answer 1

Sean Owen 在 http://community.cloudera.com/t5/Advanced-Analytics-Apache-Spark/Hit-quot-Exception-in-thread-main-java-lang-NoClassDefFoundError/td-p/44486 中建议 "You shouldn't use org.apache.spark.Logging in your app at all. That's likely the problem and solution."

所以你应该使用下面的或者higher version

<!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
<dependency>
    <groupId>commons-logging</groupId>
    <artifactId>commons-logging</artifactId>
    <version>1.1.1</version>
</dependency>

已更新

I specified that and now I am getting NoClassDefFoundError: org/apache/spark/streaming/dstream/DStream

对于上述问题你需要以下依赖

<!-- https://mvnrepository.com/artifact/org.apache.spark/spark-streaming -->
<dependency>
    <groupId>org.apache.spark</groupId>
    <artifactId>spark-streaming_2.11</artifactId>
    <version>2.0.0</version>
    <scope>provided</scope>
</dependency>

Resolving NoClassDefFoundError: org/apache/spark/Logging exception

Resolving NoClassDefFoundError: org/apache/spark/Logging exception

hadoop

hbase

apache-spark

maven-dependency