无法从Windows远程客户端连接到HBase独立服务器 [英] Unable to connect to HBase stand alone server from windows remote client

问题描述

我在Centos虚拟机上安装了HBase独立服务器，而我的客户端安装在Windows桌面上。我可以远程连接到HBase独立服务器而无需在Windows上安装HBase吗？如果是的话，这里有下列文件

/ etc / hosts文件

172.16.108.1 CentOS60-64＃由NetworkManager添加
127.0.0.1 localhost.localdomain localhost
172.29.36.32 localhost.localdomain localhost

172.29.36.32 534CentOS64-0

hbase-site.xml文件

 < configuration> 
<属性> 
<名称> hbase.rootdir< /名称> 
< value> file：/// root / Desktop / HBase / hbase< / value> 
< / property> 
 
 
<属性> 
<名称> hbase.zookeeper.property.dataDir< / name> 
<值> / root / Desktop / HBase / zookeeper< /值> 
< / property> 
<属性> 
< name> hbase.zookeeper.property.clientPort< / name> 
<值> 62181< /值> 
< / property> 
<属性> 
<名称> hbase.zookeeper.quorum< / name> 
<值> 172.29.36.32< /值> 
< / property> 
 
< / configuration> 
  

/ CONF / regrionservers文件

本地主机
172.29.36.32

代码片段连接到HBase服务器

  Configuration config = HBaseConfiguration.create（）; 
 config.set（hbase.zookeeper.quorum，172.29.36.32）; 
 config.set（hbase.zookeeper.property.clientPort，62181）; 
 
 //创建管理员
 HBaseAdmin admin = new HBaseAdmin（config）; 
 
 //创建表格描述符
 
 HTableDescriptor describe = admin.getTableDescriptor（org.apache.hadoop.hbase.TableName.valueOf（emp））; 
 
 //获取所有列系列
 Set< byte []> ColumnFamily = describe.getFamiliesKeys（）; 
 
 //列出所有列族
 System.out.println（ColumnFamily.size（））; 
 Iterator< byte []>它= ColumnFamily.iterator（）; （it.hasNext（））
 {
 System.out.println（Bytes.toString（it.next（）））; 
} 
  

---当我尝试运行上面的代码时，它花费的时间太长运行并将错误提升为....未知主机：localhost.localdomain

---我可以连接到以下url： -
http://172.29.36.32:60010/master-status
PS： - 我会感谢有人可以帮我解决问题。答案很晚，但我希望它能帮助别人。
您的问题可能是/ etc / hosts文件。我认为你应该删除以下行：

172.29.36.32 localhost.localdomain localhost

另外，如果你要连接到远程HBase的集群 - 确保添加全部集群主机名和IP对本地hosts文件（在/ etc /在Linux或C主机：\Windows\System32\drivers\\在Windows上的\\ etc \hosts），如下所示：

36.32 534CentOS64-0

显然Zookeper当试图连接到HBase的，并与Java远程连接时，它可以是一个问题，使用主机名而不是IP某处。

希望它有帮助！

I have my HBase standalone server on centos virtual machine, and my client is on windows desktop. Can I connect to the HBase standalone server remotely without installing HBase on windows ? If yes , Here are the following files

/etc/hosts file

172.16.108.1 CentOS60-64 # Added by NetworkManager 127.0.0.1 localhost.localdomain localhost 172.29.36.32 localhost.localdomain localhost

172.29.36.32 534CentOS64-0

hbase-site.xml file

<configuration>
        <property>
                <name>hbase.rootdir</name>
                <value>file:///root/Desktop/HBase/hbase</value>
        </property>


        <property>
                <name>hbase.zookeeper.property.dataDir</name>
                <value>/root/Desktop/HBase/zookeeper</value>
        </property>
        <property>
                <name>hbase.zookeeper.property.clientPort</name>
                <value>62181</value>
        </property>
        <property>
                <name>hbase.zookeeper.quorum</name>
                <value>172.29.36.32</value>
        </property>

</configuration>

/conf/regrionservers file

localhost 172.29.36.32

Code Snippet to connect to HBase server

Configuration config = HBaseConfiguration.create();
        config.set("hbase.zookeeper.quorum", "172.29.36.32");
        config.set("hbase.zookeeper.property.clientPort", "62181");

        // Creating Admin
        HBaseAdmin admin = new HBaseAdmin(config);

        // Creating Table Descriptor

        HTableDescriptor describe =admin.getTableDescriptor(org.apache.hadoop.hbase.TableName.valueOf("emp"));

        // Fetching all column families
        Set<byte[]> ColumnFamily = describe.getFamiliesKeys();

        // Listing Out the all column families
        System.out.println(ColumnFamily.size());
        Iterator<byte[]> it=ColumnFamily.iterator();
        while(it.hasNext())
        {
            System.out.println(Bytes.toString(it.next()));
        }

--- When I tried to run above code, Its taking too long time to run and raising error as .... unknown host: localhost.localdomain

--- I was able to connect to following url :- http://172.29.36.32:60010/master-status PS:- I will be thankful if someone can help me out

解决方案

The answer is late but I hope that it could help someone. The problem in your case may be /etc/hosts file. I think you should remove the following line:

172.29.36.32 localhost.localdomain localhost

Also, If you are connecting to a remote HBase cluster - make sure to add all of cluster hostnames and ip's to your local hosts file (/etc/hosts on Linux or C:\Windows\System32\drivers\etc\hosts on Windows), like that:

172.16.108.1 CentOS60-64

172.29.36.32 534CentOS64-0

Apparently Zookeper uses hostname instead of ip somewhere when trying to connect to HBase and it can be a problem when connecting remotely with Java.

Hope it helps!

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