无法通过java连接到hbase

6bc51xsx  于 2021-05-29  发布在  Hadoop
关注(0)|答案(1)|浏览(486)

我正在尝试从java连接到hbase。hbase-版本1.0.0,但我无法连接它。请告诉我我错过了什么,因为我是新的hbase。这是我的密码

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);
}

下面是我面临的错误:

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)

请引导我通过这个

k3bvogb1

k3bvogb11#

改变 L 在localhost中 l 从“h”到“h”

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(“hbase.master”,“remotehost:60000"); 即使不起作用,也要检查类路径中的所有jar(它们是远程的)
如果您使用的是maven,那么可以指向集群中的jar。
您可以转到集群并检查下面的命令,以了解远程计算机中jar的版本。

`hbase classpath`

您的客户机中应该有相同版本的jar。对于远程机器中的ex hbasex.jar,如果您正在使用hbasey.jar,则它不会连接。
另外,请在客户端机器上检查是否可以ping服务器/集群。通常会有防火墙限制。

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