Sqoop导入HBase，并借助Coprocessor协处理器同步索引到ES

1.环境

• Mysql 5.6
• Sqoop 1.4.6
• Hadoop 2.5.2
• HBase 0.98
• Elasticsearch 2.3.5

2.安装（略过）

3.HBase Coprocessor实现

HBase Observer

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Durability;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.coprocessor.BaseRegionObserver;
import org.apache.hadoop.hbase.coprocessor.ObserverContext;
import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
import org.apache.hadoop.hbase.regionserver.wal.WALEdit;
import org.apache.hadoop.hbase.util.Bytes;
import org.elasticsearch.client.Client;
//import org.elasticsearch.client.transport.TransportClient;
//import org.elasticsearch.common.settings.ImmutableSettings;
//import org.elasticsearch.common.settings.Settings;
//import org.elasticsearch.common.transport.InetSocketTransportAddress;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
//import java.util.NavigableMap;

public class DataSyncObserver extends BaseRegionObserver {

   private static Client client = null;
   private static final Log LOG = LogFactory.getLog(DataSyncObserver.class);

   /**
    * 读取HBase Shell的指令参数
    *
    * @param env
    */
   private void readConfiguration(CoprocessorEnvironment env) {
       Configuration conf = env.getConfiguration();
       Config.clusterName = conf.get("es_cluster");
       Config.nodeHost = conf.get("es_host");
       Config.nodePort = conf.getInt("es_port", -);
       Config.indexName = conf.get("es_index");
       Config.typeName = conf.get("es_type");

       LOG.info("observer -- started with config: " + Config.getInfo());
   }

   @Override
   public void start(CoprocessorEnvironment env) throws IOException {
       readConfiguration(env);
//        Settings settings = ImmutableSettings.settingsBuilder()
//                .put("cluster.name", Config.clusterName).build();
//        client = new TransportClient(settings)
//                .addTransportAddress(new InetSocketTransportAddress(
//                        Config.nodeHost, Config.nodePort));
       client = MyTransportClient.client;
   }

   @Override
   public void postPut(ObserverContext<RegionCoprocessorEnvironment> e, Put put, WALEdit edit, Durability durability) throws IOException {
       try {
           String indexId = new String(put.getRow());
           Map<byte[], List<Cell>> familyMap = put.getFamilyCellMap();
//            NavigableMap<byte[], List<Cell>> familyMap = put.getFamilyCellMap();
           Map<String, Object> json = new HashMap<String, Object>();
           for (Map.Entry<byte[], List<Cell>> entry : familyMap.entrySet()) {
               for (Cell cell : entry.getValue()) {
                   String key = Bytes.toString(CellUtil.cloneQualifier(cell));
                   String value = Bytes.toString(CellUtil.cloneValue(cell));
                   json.put(key, value);
               }
           }
           System.out.println();
           ElasticSearchOperator.addUpdateBuilderToBulk(client.prepareUpdate(Config.indexName, Config.typeName, indexId).setDoc(json).setUpsert(json));
           LOG.info("observer -- add new doc: " + indexId + " to type: " + Config.typeName);
       } catch (Exception ex) {
           LOG.error(ex);
       }
   }

   @Override
   public void postDelete(final ObserverContext<RegionCoprocessorEnvironment> e, final Delete delete, final WALEdit edit, final Durability durability) throws IOException {
       try {
           String indexId = new String(delete.getRow());
           ElasticSearchOperator.addDeleteBuilderToBulk(client.prepareDelete(Config.indexName, Config.typeName, indexId));
           LOG.info("observer -- delete a doc: " + indexId);
       } catch (Exception ex) {
           LOG.error(ex);
       }
   }

}

ES方法

import org.elasticsearch.action.bulk.BulkRequestBuilder;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.delete.DeleteRequestBuilder;
import org.elasticsearch.action.update.UpdateRequestBuilder;
import org.elasticsearch.client.Client;
//import org.elasticsearch.client.transport.TransportClient;
//import org.elasticsearch.common.settings.ImmutableSettings;
//import org.elasticsearch.common.settings.Settings;
//import org.elasticsearch.common.transport.InetSocketTransportAddress;

import java.util.HashMap;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class ElasticSearchOperator {

   // 缓冲池容量
   private static final int MAX_BULK_COUNT = ;
   // 最大提交间隔（秒）
   private static final int MAX_COMMIT_INTERVAL =  * ;

   private static Client client = null;
   private static BulkRequestBuilder bulkRequestBuilder = null;

   private static Lock commitLock = new ReentrantLock();

   static {

       // elasticsearch1.5.0
//        Settings settings = ImmutableSettings.settingsBuilder()
//                .put("cluster.name", Config.clusterName).build();
//        client = new TransportClient(settings)
//                .addTransportAddress(new InetSocketTransportAddress(
//                        Config.nodeHost, Config.nodePort));

       // 2.3.5
       client = MyTransportClient.client;

       bulkRequestBuilder = client.prepareBulk();
       bulkRequestBuilder.setRefresh(true);

       Timer timer = new Timer();
       timer.schedule(new CommitTimer(),  * , MAX_COMMIT_INTERVAL * );
   }

   /**
    * 判断缓存池是否已满，批量提交
    *
    * @param threshold
    */
   private static void bulkRequest(int threshold) {
       if (bulkRequestBuilder.numberOfActions() > threshold) {
           BulkResponse bulkResponse = bulkRequestBuilder.execute().actionGet();
           if (!bulkResponse.hasFailures()) {
               bulkRequestBuilder = client.prepareBulk();
           }
       }
   }

   /**
    * 加入索引请求到缓冲池
    *
    * @param builder
    */
   public static void addUpdateBuilderToBulk(UpdateRequestBuilder builder) {
       commitLock.lock();
       try {
           bulkRequestBuilder.add(builder);
           bulkRequest(MAX_BULK_COUNT);
       } catch (Exception ex) {
           ex.printStackTrace();
       } finally {
           commitLock.unlock();
       }
   }

   /**
    * 加入删除请求到缓冲池
    *
    * @param builder
    */
   public static void addDeleteBuilderToBulk(DeleteRequestBuilder builder) {
       commitLock.lock();
       try {
           bulkRequestBuilder.add(builder);
           bulkRequest(MAX_BULK_COUNT);
       } catch (Exception ex) {
           ex.printStackTrace();
       } finally {
           commitLock.unlock();
       }
   }

   /**
    * 定时任务，避免RegionServer迟迟无数据更新，导致ElasticSearch没有与HBase同步
    */
   static class CommitTimer extends TimerTask {
       @Override
       public void run() {
           commitLock.lock();
           try {
               bulkRequest();
           } catch (Exception ex) {
               ex.printStackTrace();
           } finally {
               commitLock.unlock();
           }
       }
   }

}

打包并上传到hdfs

mvn clean compile assembly:single
mv observer-1.0-SNAPSHOT-jar-with-dependencies.jar observer-hb0.-es2.3.5.jar
hdfs dfs -put observer-hb0.-es2.3.5.jar /hbase/lib/

4.创建HBase表，并启用Coprocessor

mysql

hbase shell
create 'region','data'
disable 'region'
alter 'region', METHOD => 'table_att', 'coprocessor' => 'hdfs:///hbase/lib/observer-hb0.98-es2.3.5.jar|com.gavin.observer.DataSyncObserver|1001|es_cluster=elas2.3.4,es_type=mysql_region,es_index=hbase,es_port=9300,es_host=localhost'
enable 'region'

oracle

create 'sp','data'
disable 'sp'
alter 'sp', METHOD => 'table_att', 'coprocessor' => 'hdfs:///hbase/lib/observer-hb0.98-es2.3.5.jar|com.gavin.observer.DataSyncObserver|1001|es_cluster=elas2.3.4,es_type=oracle_sp,es_index=hbase,es_port=9300,es_host=localhost'
enable 'sp'

查看

hbase(main)::* describe 'ora_test'

Table ora_test is ENABLED
ora_test, {TABLE_ATTRIBUTES => {coprocessor$ => 'hdfs:///appdt/hbase
/lib/observer-hb1.2.2-es2.3.5.jar|com.gavin.observer.DataSyncObserver
||es_cluster=elas2.3.4,es_type=ora_test,es_index=hbase,es_port=
,es_host=localhost'}
COLUMN FAMILIES DESCRIPTION
{NAME => 'data', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW',
 REPLICATION_SCOPE => '', VERSIONS => '', COMPRESSION => 'NONE', MI
N_VERSIONS => '', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', B
LOCKSIZE => '', IN_MEMORY => 'false', BLOCKCACHE => 'true'}
 row(s) in 0.0260 seconds

删除Coprocessor

disable 'ora_test'
alter 'ora_test',METHOD => 'table_att_unset',NAME =>'coprocessor$1'
enable 'ora_test'

查看删除效果

hbase(main)::> describe 'ora_test'

Table ora_test is ENABLED
ora_test
COLUMN FAMILIES DESCRIPTION
{NAME => 'data', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW',
 REPLICATION_SCOPE => '', VERSIONS => '', COMPRESSION => 'NONE', MI
N_VERSIONS => '', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', B
LOCKSIZE => '', IN_MEMORY => 'false', BLOCKCACHE => 'true'}
 row(s) in 0.0200 seconds

5.使用sqoop上传数据

mysql

bin/sqoop import --connect jdbc:mysql://192.168.1.187:3306/trade_dev --username mysql --password 111111 --table TB_REGION --hbase-table region --hbase-row-key REGION_ID --column-family data

oracle

bin/sqoop import --connect jdbc:oracle:thin:@192.168.16.223:/orcl --username sitts --password password --table SITTS.ESB_SERVICE_PARAM --split-by PARAM_ID --hbase-table sp --hbase-row-key PARAM_ID --column-family data

6.校验

HBase

scan 'region'

ES

7.参考

HBase Observer同步数据到ElasticSearch

8.注意

• 同一个Coprocessor用一个index，不同表可以设置不同type，不然index会乱
• 修改Java代码后，上传到HDFS的jar包文件必须和之前不一样，否则就算卸载掉原有的coprocessor再重新安装也不能生效
• 如果你有多个表对多个索引/类型的映射，每个表所加载Observer对应的jar包路径不能相同，否则ElasticSearch会串数据