无法使用 java 创建 hbase

Question

我已经编写了一个简单的 java 代码用于在 hbase 中创建 table 但不知何故它不起作用。我检查了所有服务是否正常工作，即 HMaster、Regionserver 和 Zookeeper。下面是我写的代码

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.client.HBaseAdmin;
public class CreateSchema
{
public static void main(String[] args) throws IOException
{

try
{
   HBaseConfiguration conf = new HBaseConfiguration(new Configuration());
   HBaseAdmin hbase = new HBaseAdmin(conf);
   HTableDescriptor desc = new HTableDescriptor("sample");
   HColumnDescriptor meta = new HColumnDescriptor("samplecolumn1".getBytes());
   HColumnDescriptor prefix = new HColumnDescriptor("samplecolumn2".getBytes());
   desc.addFamily(meta);
   desc.addFamily(prefix);
   System.out.println("Creating table");
   hbase.createTable(desc);
   System.out.println("Done");
    }
    catch(Exception e)
    {
    System.out.println("Error Ocuured");
    }

     }
    }

这是动物园管理员日志。

2015-01-15 07:46:01,594 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServer``CnxnFactory@197] - Accepted socket connection from /127.0.0.1:60599 2015-01-15 07:46:01,595 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@822] - Connection request from old client /127.0.0.1:60599; will be dropped if server is in r-o mode 2015-01-15 07:46:01,595 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@868] - Client attempting to establish new session at /127.0.0.1:60599 2015-01-15 07:46:01,619 - INFO [SyncThread:0:ZooKeeperServer@617] - Established session 0x14aec781bb9000b with negotiated timeout 40000 for client /127.0.0.1:60599 2015-01-15 07:46:37,151 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197] - Accepted socket connection from /10.0.2.15:58102 2015-01-15 07:46:37,152 - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@357] - caught end of stream exception EndOfStreamException: Unable to read additional data from client sessionid 0x0, likely client has closed socket at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:228) at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208) at java.lang.Thread.run(Thread.java:745) 2015-01-15 07:46:37,153 - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1007] - Closed socket connection for client /10.0.2.15:58102 (no session established for client)

在运行 Hbase java 编程之后没有任何反应。

java CreateSchema

Creating table

请让我知道可能是什么问题。

Answer 1

发生这种情况的原因之一是您的 hbase-site.xml 在类路径中不可用。

当你运行:

HBaseConfiguration conf = new HBaseConfiguration(new Configuration());

HbaseConfiguration based the hbase-site.xml is created.

PS：我运行你的代码在我的 eclipse 中运行良好。 table 样本的创建没有任何错误。

无法使用 java 创建 hbase

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