我是hadoop和hbase的新手，并使用Java api创建了一些小程序来在hbase中创建表。但是我陷入了大错误，无法解决它。
这是我在Eclipse Ubuntu中运行的Java程序
package trial;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.util.Bytes;
public class Sample {
public static void main(String[] args) {
try
{
System.out.println("Start working");
Configuration conf=HBaseConfiguration.create();
System.out.println("1");
// conf.set("hbase.master","localhost:3569");
System.out.println("2");
HBaseAdmin admin=new HBaseAdmin(conf);
System.out.println("3");
HTableDescriptor td=new HTableDescriptor(TableName.valueOf("Employee"));
System.out.println("4");
td.addFamily(new HColumnDescriptor("Personal"));
System.out.println("5");
td.addFamily(new HColumnDescriptor("Professional"));
System.out.println("6");
admin.createTable(td);
System.out.println("Table Created");
admin.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
这是我尝试在程序上方运行时遇到的错误博客
Start working
1
2
log4j:WARN No appenders could be found for logger (org.apache.hadoop.security.Groups).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
3
4
5
6
org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=35, exceptions:
Tue Aug 29 00:26:32 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:26:32 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:26:32 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:26:32 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:26:33 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:26:34 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:26:36 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:26:40 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:26:50 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:27:00 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:27:10 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:27:20 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:27:40 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:28:00 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:28:20 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:28:41 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:29:01 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:29:21 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:29:41 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:30:01 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:30:21 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:30:41 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:31:01 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:31:21 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:31:42 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:32:02 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:32:22 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:32:42 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:33:02 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:33:22 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:33:42 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:34:02 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:34:22 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:34:42 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
Tue Aug 29 00:35:02 IST 2017, RpcRetryingCaller{globalStartTime=1503946591438, pause=100, retries=35}, org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:159)
at org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:4389)
at org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:4381)
at org.apache.hadoop.hbase.client.HBaseAdmin.createTableAsyncV2(HBaseAdmin.java:755)
at org.apache.hadoop.hbase.client.HBaseAdmin.createTable(HBaseAdmin.java:676)
at org.apache.hadoop.hbase.client.HBaseAdmin.createTable(HBaseAdmin.java:609)
at trial.Sample.main(Sample.java:39)
Caused by: org.apache.hadoop.hbase.MasterNotRunningException: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStub(ConnectionManager.java:1563)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$MasterServiceStubMaker.makeStub(ConnectionManager.java:1583)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getKeepAliveMasterService(ConnectionManager.java:1740)
at org.apache.hadoop.hbase.client.MasterCallable.prepare(MasterCallable.java:38)
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:135)
... 6 more
Caused by: com.google.protobuf.ServiceException: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:240)
at org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:336)
at org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$BlockingStub.isMasterRunning(MasterProtos.java:61347)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$MasterServiceStubMaker.isMasterRunning(ConnectionManager.java:1594)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStubNoRetries(ConnectionManager.java:1532)
at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation$StubMaker.makeStub(ConnectionManager.java:1554)
... 10 more
Caused by: java.lang.NoClassDefFoundError: com/yammer/metrics/core/Gauge
at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:225)
... 15 more
Caused by: java.lang.ClassNotFoundException: com.yammer.metrics.core.Gauge
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 16 more
另外，当我在终端中运行jps命令时，它显示我的hmaster和hregionserver正在运行。我的hbase shell也运行良好，但是当我尝试运行该程序时，它显示出了很多错误。
请帮助我，过去2天都在挣扎，但是没有任何解决方案可以帮助我。
提前致谢
最佳答案
由于现有的修复程序，因此将其添加为答案而不是仅添加注释:
问题是您拥有的Yammer版本与hbase不兼容。尝试删除所有其他内容，仅拥有hbase。然后一次缓慢地添加一个库，直到失败。 (或使用依赖关系的第三方分析)。
另外，请确保路径中包含yammer库。
关于java - 无法在Eclipse中使用Java访问hbase，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45926108/