我正在尝试从Java连接到Hbase。 Hbase -Version 1.0.0 但我无法连接它。请告诉我,因为我是Hbase的新手,我缺少了什么。 这是我的代码
public class HbaseAddRetrieveData{
public static void main(String[] args) throws IOException {
TableName tableName = TableName.valueOf("stock-prices");
Configuration conf = HBaseConfiguration.create();
conf.set("hbase.master","LocalHost:60000");
conf.set("hbase.zookeeper.property.clientPort", "2181");
conf.set("hbase.zookeeper.quorum", "LocalHost");
conf.set("zookeeper.znode.parent", "/hbase-unsecure");
System.out.println("Config set");
Connection conn = ConnectionFactory.createConnection(conf);
System.out.println("Connection");
Admin admin = conn.getAdmin();
if (!admin.tableExists(tableName)) {
System.out.println("In admin");
admin.createTable(new HTableDescriptor(tableName).addFamily(new HColumnDescriptor("cf")));
}
Table table = conn.getTable(tableName);
Put p = new Put(Bytes.toBytes("AAPL10232015"));
p.addColumn(Bytes.toBytes("cf"), Bytes.toBytes("close"), Bytes.toBytes(119));
table.put(p);
Result r = table.get(new Get(Bytes.toBytes("AAPL10232015")));
System.out.println(r);
}
以下是我面临的错误:
Exception in thread "main" org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get the locations
at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:305)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:131)
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:56)
at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:287)
at org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:267)
at org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:139)
at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:134)
at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:823)
at org.apache.hadoop.hbase.MetaTableAccessor.fullScan(MetaTableAccessor.java:601)
at org.apache.hadoop.hbase.MetaTableAccessor.tableExists(MetaTableAccessor.java:365)
at org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:281)
at com.tcs.healthcare.HbaseRetrieveData.main(HbaseRetrieveData.java:32)
请指导我完成这个
答案 0 :(得分:1)
将localhost中的L
更改为l
和&#39; H&#39;到了&#39; h&#39;
Configuration conf = HBaseConfiguration.create();
conf.set("hbase.master","localhost:60000");
conf.set("hbase.zookeeper.property.clientPort", "2181");
conf.set("hbase.zookeeper.quorum", "localhost");
conf.set("zookeeper.znode.parent", "/hbase-unsecure");
如果您使用的是远程机器,那么conf.set(&#34; hbase.master&#34;,&#34; remotehost:60000&#34;);即使它不工作,然后检查类路径中的所有罐子(远程)
如果您使用的是maven,则可以指向群集中的jar。
你可以去集群并检查下面的命令,以了解远程机器中的jar版本。
`hbase classpath`
您的客户端计算机中应该存在相同版本的jar。对于远程机器中的ex hbasex.jar,您使用的是hbasey.jar,然后它就不会连接。
此外,请从客户端计算机检查您是否能够ping服务器/群集。通常会有防火墙限制。