Question

我正在使用Hadoop和HBase进行测试项目。目前，群集在Windows计算机上托管了2个Ubuntu VM。

我可以使用以下HBase Java API配置远程执行PUT，QUERY和DELETE操作（在我的主机中）

config = HBaseConfiguration.create();
config.set("hbase.zookeeper.quorum", "192.168.56.90");  
config.set("hbase.zookeeper.property.clientPort", "2222");

当我尝试使用与上面相同的配置在Windows上运行HBase MapReduce作业时，我收到以下错误

    13/03/24 06:11:03 ERROR security.UserGroupInformation: PriviledgedActionException as:Joel cause:java.io.IOException: Failed to set permissions of path: \tmp\hadoop-Joel\mapred\staging\Joel290889388\.staging to 0700
java.io.IOException: Failed to set permissions of path: \tmp\hadoop-Joel\mapred\staging\Joel290889388\.staging to 0700

根据我在网上看到的内容，在Windows上运行MapReduce作业似乎存在问题。所以我尝试使用“java-jar MR.jar”在Linux上运行MapReduce作业。

在Linux上，我无法连接到Zookeeper。由于未知原因，Zookeeper主机和端口正在客户端重置

13/03/24 05:59:33 INFO zookeeper.ZooKeeper: Client environment:os.version=3.5.0-23-generic
13/03/24 05:59:33 INFO zookeeper.ZooKeeper: Client environment:user.name=hduser
13/03/24 05:59:33 INFO zookeeper.ZooKeeper: Client environment:user.home=/home/hduser
13/03/24 05:59:33 INFO zookeeper.ZooKeeper: Client environment:user.dir=/home/hduser/testes
13/03/24 05:59:33 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=192.168.56.90:2222 sessionTimeout=180000 watcher=hconnection
13/03/24 05:59:33 INFO zookeeper.RecoverableZooKeeper: The identifier of this process is 11552@node01
13/03/24 05:59:33 INFO zookeeper.ClientCnxn: Opening socket connection to server node01/192.168.56.90:2222. Will not attempt to authenticate using SASL (unknown error)
13/03/24 05:59:33 INFO zookeeper.ClientCnxn: Socket connection established to node01/192.168.56.90:2222, initiating session
13/03/24 05:59:33 INFO zookeeper.ClientCnxn: Session establishment complete on server node01/192.168.56.90:2222, sessionid = 0x13d9afaa1a30006, negotiated timeout = 180000
13/03/24 05:59:33 INFO client.HConnectionManager$HConnectionImplementation: Closed zookeeper sessionid=0x13d9afaa1a30006
13/03/24 05:59:33 INFO zookeeper.ZooKeeper: Session: 0x13d9afaa1a30006 closed
13/03/24 05:59:33 INFO zookeeper.ClientCnxn: EventThread shut down
13/03/24 05:59:33 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
13/03/24 05:59:33 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
13/03/24 05:59:33 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=localhost:2181 sessionTimeout=180000 watcher=hconnection
13/03/24 05:59:33 INFO zookeeper.RecoverableZooKeeper: The identifier of this process is 11552@node01
13/03/24 05:59:33 INFO zookeeper.ClientCnxn: Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
13/03/24 05:59:33 WARN zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:692)
        at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)

从上面的日志判断，它正确连接到node01：2222（node01解析为192.168.56.90）。但由于某种原因，它更改为localhost：2181然后它会给出连接拒绝错误。

如何修复此问题，以便在与Zookeeper运行的同一台计算机上运行在Linux上运行的MR作业？

版本：Hbase 0.94.5 / Hadoop 1.1.2

感谢。

Answer 1

您可能还需要设置hbase.master。

还要检查/ etc / hosts文件并查看它是否正确。你能使用那个连接信息telnet到zookeeper吗？

config.set("hbase.zookeeper.quorum", "192.168.56.90");  
config.set("hbase.zookeeper.property.clientPort", "2222");
config.set("hbase.master", "some.host.com:60000")

在HBase上运行MapReduce会导致Zookeeper错误

1 个答案: