运行hbase java程序时出错

cl25kdpy  于 2021-05-29  发布在  Hadoop
关注(0)|答案(3)|浏览(410)

这是我的javahbase createtable程序below:-

public class createtable 
 {

  public static void main(String[] args) throws IOException 

  {   
       Configuration conf = HBaseConfiguration.create();    
       conf.set("hbase.zookeeper.quorum", "sandbox.hortonworks.com");
       conf.set("hbase.zookeeper.property.clientPort", "2181");
       conf.set("zookeeper.znode.parent", "/hbase-unsecure");
       HBaseAdmin admin = new HBaseAdmin(conf);
       HTableDescriptor tableDescriptor = new HTableDescriptor(TableName.valueOf("people"));
       tableDescriptor.addFamily(new HColumnDescriptor("personal"));
       tableDescriptor.addFamily(new HColumnDescriptor("contactinfo"));
       admin.createTable(tableDescriptor);
       Put put = new Put(Bytes.toBytes("doe-john-m-12345");     
   }

在运行命令hadoop jar table-0.0.1-snapshot.jar table.createtable时创建程序的jar(table-0.0.1-snapshot.jar)之后
我要走了

Exception in thread "main" java.lang.NoClassDefFoundError:org/apachehadoop/hbase/HBaseConfiguration at 
    table.createtable.main(createtable.java:17)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav     a:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:234)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:148)                           Causedby:
     java.lang.ClassNotFoundException:org.apache.hadoop.hbase.HBase
     Configuration     
     at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 7 more

 how do i resolve this error ??
9udxz4iz

9udxz4iz1#

请阅读此博客:https://my-bigdata-blog.blogspot.com/2017/08/hbase-programming-on-map-reduce-with.html
有两点要做
1) 代码应该有tablemapreduceutil.adddependencyjars(作业);
2) 在命令行上-执行命令之前,请执行以下操作:
export hadoop\u classpath=您的jar路径
export hadoop\u classpath=$hadoop\u classpath: hbase classpath 这将添加要执行的hbase库。在maven/netbeans中添加的是用于编译的。

pjngdqdw

pjngdqdw2#

我解决了这个问题,因为在制作fat jar时有问题,而且新的hbase版本jar中有许多依赖项,因此我还向eclipse外部添加了hbase-client-1.2.6-jar和hbase-common-1.2.6-jar,然后构建fat jar……这解决了我的问题。

lc8prwob

lc8prwob3#

您的代码无法看到hbase.jar。请尝试在pom.xml中添加此片段

<!-- https://mvnrepository.com/artifact/org.apache.hbase/hbase -->
<dependency>
    <groupId>org.apache.hbase</groupId>
    <artifactId>hbase</artifactId>
    <version>0.90.2</version>
</dependency>

然后运行它。

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