gridgain异常java.lang.CompatibleClassChangeError:实现类

3j86kqsm  于 2021-06-21  发布在  Storm
关注(0)|答案(2)|浏览(326)

我正在使用tridentstorm并尝试在function prepare方法中启动一个网格示例。同一个配置文件适用于本地集群。。当我在remore集群中提交它时,我得到了一个错误。
代码:

public class MemoryGrid extends BaseFunction {

private static final long serialVersionUID = -4574506761580804738L;
private static final String configFileLocation = "file:///home/path/config.xml";
MemGridDAO memgriddao;
public void prepare(Map conf, TridentOperationContext context){
    this.memgriddao = new MemGridDAO (configFileLocation);
}
public void execute(TridentTuple tuple, TridentCollector collector) {
    try {
        memgriddao.put("cahcename",tuple.getValue(0),tuple.getValue(1));
    } catch (GridException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    collector.emit(null);
} 

 public class MemGridDAO {

  public MemGridDAO(String configFile){

  Grid grid = GridGain.start(configFile);
  }

  }

错误

java.lang.IncompatibleClassChangeError: Implementing class
    at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.7.0_45]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800) ~[na:1.7.0_45]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.7.0_45]
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) ~[na:1.7.0_45]
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71) ~[na:1.7.0_45]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[na:1.7.0_45]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[na:1.7.0_45]
    at java.security.AccessController.doPrivileged(Native Method) ~[na:1.7.0_45]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[na:1.7.0_45]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[na:1.7.0_45]
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) ~[na:1.7.0_45]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[na:1.7.0_45]
    at java.lang.Class.forName0(Native Method) ~[na:1.7.0_45]
    at java.lang.Class.forName(Class.java:190) ~[na:1.7.0_45]
    at org.gridgain.grid.util.GridUtils.addLog4jNoOpLogger(GridUtils.java:7697) ~[stormjar.jar:na]
    at org.gridgain.grid.kernal.GridGainEx.start(GridGainEx.java:732) ~[stormjar.jar:na]
    at org.gridgain.grid.kernal.GridGainEx.start(GridGainEx.java:677) ~[stormjar.jar:na]
    at org.gridgain.grid.kernal.GridGainEx.start(GridGainEx.java:524) ~[stormjar.jar:na]
    at org.gridgain.grid.kernal.GridGainEx.start(GridGainEx.java:494) ~[stormjar.jar:na]
    at org.gridgain.grid.GridGain.start(GridGain.java:314) ~[stormjar.jar:na]
zc0qhyus

zc0qhyus1#

看起来在远程集群应用程序类路径中有多个不兼容的log4jjar版本(很可能,其中一个是gridgain依赖项,另一个已经存在于应用程序依赖项中)。
您需要使用与gridgain相同的log4j版本,或者将gridgain配置为使用非log4j日志。例如,如果您想保留您的log4j版本,可以使用 GridSlf4jLogger 以及适当的slf4j-to-log4j绑定。

li9yvcax

li9yvcax2#

这可能是一个编译问题。试着干净利落。可能是因为.class文件中所有依赖类之间不匹配。
CompatibleClassChangeError扩展了linkageerror,该错误与编译子类后发生更改的基类引起的问题有关。
更多信息:http://examples.javacodegeeks.com/java-basics/exceptions/java-lang-incompatibleclasschangeerror-how-to-resolve-incompatible-class-change-error/

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