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", -1);Config.indexName = conf.get("es_index");Config.typeName = conf.get("es_type");LOG.info("observer -- started with config: " + Config.getInfo());}@Overridepublic 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;}@Overridepublic 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);}}@Overridepublic 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);}}}

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 = 10;// 最大提交间隔（秒）private static final int MAX_COMMIT_INTERVAL = 60 * 5;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));// 2.3.5client = MyTransportClient.client;bulkRequestBuilder = client.prepareBulk();bulkRequestBuilder.setRefresh(true);Timer timer = new Timer();timer.schedule(new CommitTimer(), 10 * 1000, MAX_COMMIT_INTERVAL * 1000);}/*** 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 {@Overridepublic void run() {commitLock.lock();try {bulkRequest(0);} catch (Exception ex) {ex.printStackTrace();} finally {commitLock.unlock();}}}}

mvn clean compile assembly:single
mv observer-1.0-SNAPSHOT-jar-with-dependencies.jar observer-hb0.98-es2.3.5.jar
hdfs dfs -put observer-hb0.98-es2.3.5.jar /hbase/lib/

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'

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'

hbase(main):007:0* describe 'ora_test'

Table ora_test is ENABLED
ora_test, {TABLE_ATTRIBUTES => {coprocessor$1 => 'hdfs:///appdt/hbase
/lib/observer-hb1.2.2-es2.3.5.jar|com.gavin.observer.DataSyncObserver
|1001|es_cluster=elas2.3.4,es_type=ora_test,es_index=hbase,es_port=93
00,es_host=localhost'}
COLUMN FAMILIES DESCRIPTION
{NAME => 'data', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW',REPLICATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NONE', MI
N_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', B
LOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}
1 row(s) in 0.0260 seconds

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

hbase(main):011:0> describe 'ora_test'

Table ora_test is ENABLED
ora_test
COLUMN FAMILIES DESCRIPTION
{NAME => 'data', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW',REPLICATION_SCOPE => '0', VERSIONS => '1', COMPRESSION => 'NONE', MI
N_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', B
LOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}
1 row(s) in 0.0200 seconds

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

bin/sqoop import --connect jdbc:oracle:thin:@192.168.16.223:1521/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

scan 'region'

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