使用Spark Scala遠程連接HBase

Question

我在Windows（這是我的本地）中配置了Hadoop和spark，並在其中裝有hbase的vm（同一台機器）中安裝了cloudera。
我正在嘗試使用spark流提取數據並將其放入vm中的hbase中。

是否有可能做到這一點？

我的嘗試：

軟件包hbase

import org.apache.hadoop.hbase.HBaseConfiguration
import org.apache.hadoop.hbase.client.{ConnectionFactory,HBaseAdmin,HTable,Put,Get}


object Connect {

  def main(args: Array[String]){
  val conf = HBaseConfiguration.create()
val tablename = "Acadgild_spark_Hbase"

val HbaseConf = HBaseConfiguration.create()
  HbaseConf.set("hbase.zookeeper.quorum","192.168.117.133")
  HbaseConf.set("hbase.zookeeper.property.clientPort","2181")

  val connection = ConnectionFactory.createConnection(HbaseConf);

  val admin = connection.getAdmin();

 val listtables=admin.listTables()

listtables.foreach(println)

  }
}

錯誤：

18/08/08 21:05:09 INFO ZooKeeper: Initiating client connection, connectString=192.168.117.133:2181 sessionTimeout=90000 watcher=org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient$$Lambda$13/1357491107@12d1bfb1
18/08/08 21:05:15 INFO ClientCnxn: Opening socket connection to server 192.168.117.133/192.168.117.133:2181. Will not attempt to authenticate using SASL (unknown error)
18/08/08 21:05:15 INFO ClientCnxn: Socket connection established to 192.168.117.133/192.168.117.133:2181, initiating session
18/08/08 21:05:15 INFO ClientCnxn: Session establishment complete on server 192.168.117.133/192.168.117.133:2181, sessionid = 0x16518f57f950012, negotiated timeout = 40000
18/08/08 21:05:16 WARN ConnectionUtils: Can not resolve quickstart.cloudera, please check your network
java.net.UnknownHostException: quickstart.cloudera
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(Unknown Source)
    at java.net.InetAddress.getAddressesFromNameService(Unknown Source)
    at java.net.InetAddress.getAllByName0(Unknown Source)
    at java.net.InetAddress.getAllByName(Unknown Source)
    at java.net.InetAddress.getAllByName(Unknown Source)
    at java.net.InetAddress.getByName(Unknown Source)
    at org.apache.hadoop.hbase.client.ConnectionUtils.getStubKey(ConnectionUtils.java:233)
    at org.apache.hadoop.hbase.client.ConnectionImplementation$MasterServiceStubMaker.makeStubNoRetries(ConnectionImplementation.java:1126)
    at org.apache.hadoop.hbase.client.ConnectionImplementation$MasterServiceStubMaker.makeStub(ConnectionImplementation.java:1148)
    at org.apache.hadoop.hbase.client.ConnectionImplementation.getKeepAliveMasterService(ConnectionImplementation.java:1213)
    at org.apache.hadoop.hbase.client.ConnectionImplementation.getMaster(ConnectionImplementation.java:1202)
    at org.apache.hadoop.hbase.client.MasterCallable.prepare(MasterCallable.java:57)
    at org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithRetries(RpcRetryingCallerImpl.java:105)
    at org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:3055)
    at org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:3047)
    at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:460)
    at org.apache.hadoop.hbase.client.HBaseAdmin.listTables(HBaseAdmin.java:444)
    at azure.iothub$.main(iothub.scala:35)
    at azure.iothub.main(iothub.scala)

Answer 1

基於此錯誤，您不能在代碼中使用quickstart.cloudera ，因為網絡堆棧正在使用DNS嘗試訪問它，但是您的外部路由器不了解您的VM。

---

您需要使用localhost ，然后確保已正確配置VM以使用需要連接的端口。

但是，我認為Zookeeper正在將該主機名返回到您的代碼中。 因此，必須在Host OS計算機上編輯Hosts文件以添加訂單項。

例如

127.0.0.1 localhost quickstart.cloudera

或者，您可以在zookeeper-shell或Cloudera Manager（在HBase配置中）中四處閑逛，然后編輯quickstart.cloudera以返回地址192.168.117.133