log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.Shell).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=36, exceptions:
Fri Jun 12 14:37:13 CST 2015, null, java.net.SocketTimeoutException: callTimeout=60000, callDuration=77417: row 'mytown:blog,,' on table 'hbase:meta' at region=hbase:meta,,1.1588230740, hostname=zjenterprise06,60020,1434088361625, seqNum=0

    at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.throwEnrichedException(RpcRetryingCallerWithReadReplicas.java:264)
    at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:215)
    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:288)
    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:825)
    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 org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:291)
    at org.zjenterprise.tizr.hbase.HbaseTestE.creatTable(HbaseTestE.java:48)
    at org.zjenterprise.tizr.hbase.HbaseTestE.main(HbaseTestE.java:315)
Caused by: java.net.SocketTimeoutException: callTimeout=60000, callDuration=77417: row 'mytown:blog,,' on table 'hbase:meta' at region=hbase:meta,,1.1588230740, hostname=zjenterprise06,60020,1434088361625, seqNum=0
    at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:159)
    at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas$RetryingRPC.call(ScannerCallableWithReplicas.java:310)
    at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas$RetryingRPC.call(ScannerCallableWithReplicas.java:291)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.hadoop.net.ConnectTimeoutException: 10000 millis timeout while waiting for channel to be ready for connect. ch : java.nio.channels.SocketChannel[connection-pending remote=zjenterprise06/60.191.124.236:60020]
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:534)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495)
    at org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.setupConnection(RpcClientImpl.java:403)
    at org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.setupIOstreams(RpcClientImpl.java:709)
    at org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.writeRequest(RpcClientImpl.java:880)
    at org.apache.hadoop.hbase.ipc.RpcClientImpl$Connection.tracedWriteRequest(RpcClientImpl.java:849)
    at org.apache.hadoop.hbase.ipc.RpcClientImpl.call(RpcClientImpl.java:1173)
    at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:216)
    at org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:300)
    at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$BlockingStub.scan(ClientProtos.java:31889)
    at org.apache.hadoop.hbase.client.ScannerCallable.openScanner(ScannerCallable.java:344)
    at org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:188)
    at org.apache.hadoop.hbase.client.ScannerCallable.call(ScannerCallable.java:62)
    at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:126)
    ... 6 more





package org.zjenterprise.tizr.hbase;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.util.Bytes;

public class HBaseTestb {

    private static Configuration conf = null;

    /**
     * 初始化配置
     */
    static {
        Configuration HBASE_CONFIG = new Configuration();
        // 与hbase/conf/hbase-site.xml中hbase.zookeeper.quorum配置的值相同 set("hbase.zookeeper.quorum","192.168.3.138,192.166.3.140,192.168.3.142"); 
        HBASE_CONFIG.set("hbase.zookeeper.quorum", "192.168.3.130");
        // 与hbase/conf/hbase-site.xml中hbase.zookeeper.property.clientPort配置的值相同
        HBASE_CONFIG.set("hbase.zookeeper.property.clientPort", "2181");
        conf = HBaseConfiguration.create(HBASE_CONFIG);
    }

    /**
     * 创建一张表
     */
    public static void creatTable(String tableName, String[] familys)
            throws Exception {
        HBaseAdmin admin = new HBaseAdmin(conf);
        if (admin.tableExists(tableName)) {
            System.out.println("table already exists!");
        } else {
            HTableDescriptor tableDesc = new HTableDescriptor(tableName);
            for (int i = 0; i < familys.length; i++) {
                tableDesc.addFamily(new HColumnDescriptor(familys[i]));
            }
            admin.createTable(tableDesc);
            System.out.println("create table " + tableName + " ok.");
        }
    }

    /**
     * 删除表
     */
    public static void deleteTable(String tableName) throws Exception {
        try {
            HBaseAdmin admin = new HBaseAdmin(conf);
            admin.disableTable(tableName);
            admin.deleteTable(tableName);
            System.out.println("delete table " + tableName + " ok.");
        } catch (MasterNotRunningException e) {
            e.printStackTrace();
        } catch (ZooKeeperConnectionException e) {
            e.printStackTrace();
        }
    }

    /**
     * 插入一行记录
     */
    public static void addRecord(String tableName, String rowKey,
            String family, String qualifier, String value) throws Exception {
        try {
            HTable table = new HTable(conf, tableName);
            Put put = new Put(Bytes.toBytes(rowKey));
            put.add(Bytes.toBytes(family), Bytes.toBytes(qualifier),
                    Bytes.toBytes(value));
            table.put(put);
            System.out.println("insert recored " + rowKey + " to table "
                    + tableName + " ok.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 删除一行记录
     */
    public static void delRecord(String tableName, String rowKey)
            throws IOException {
        HTable table = new HTable(conf, tableName);
        List list = new ArrayList();
        Delete del = new Delete(rowKey.getBytes());
        list.add(del);
        table.delete(list);
        System.out.println("del recored " + rowKey + " ok.");
    }

    /**
     * 查找一行记录
     */
    public static void getOneRecord(String tableName, String rowKey)
            throws IOException {
        HTable table = new HTable(conf, tableName);
        Get get = new Get(rowKey.getBytes());
        Result rs = table.get(get);
        for (KeyValue kv : rs.raw()) {
            System.out.print(new String(kv.getRow()) + " ");
            System.out.print(new String(kv.getFamily()) + ":");
            System.out.print(new String(kv.getQualifier()) + " ");
            System.out.print(kv.getTimestamp() + " ");
            System.out.println(new String(kv.getValue()));
        }
    }

    /**
     * 显示所有数据
     */
    public static void getAllRecord(String tableName) {
        try {
            HTable table = new HTable(conf, tableName);
            Scan s = new Scan();
            ResultScanner ss = table.getScanner(s);
            for (Result r : ss) {
                for (KeyValue kv : r.raw()) {
                    System.out.print(new String(kv.getRow()) + " ");
                    System.out.print(new String(kv.getFamily()) + ":");
                    System.out.print(new String(kv.getQualifier()) + " ");
                    System.out.print(kv.getTimestamp() + " ");
                    System.out.println(new String(kv.getValue()));
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] agrs) {
        try {
            String tablename = "mytown:kaosheng";
            String[] familys = { "grade", "course" };
            HBaseTestb.creatTable(tablename, familys);

            // add record zkb
            HBaseTestb.addRecord(tablename, "zkb", "grade", "", "5");
            HBaseTestb.addRecord(tablename, "zkb", "course", "", "90");
            HBaseTestb.addRecord(tablename, "zkb", "course", "math", "97");
            HBaseTestb.addRecord(tablename, "zkb", "course", "art", "87");
            // add record baoniu
            HBaseTestb.addRecord(tablename, "baoniu", "grade", "", "4");
            HBaseTestb.addRecord(tablename, "baoniu", "course", "math", "89");

            System.out.println("===========get one record========");
            HBaseTestb.getOneRecord(tablename, "zkb");

            System.out.println("===========show all record========");
            HBaseTestb.getAllRecord(tablename);

            System.out.println("===========del one record========");
            HBaseTestb.delRecord(tablename, "baoniu");
            HBaseTestb.getAllRecord(tablename);

            System.out.println("===========show all record========");
            HBaseTestb.getAllRecord(tablename);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}