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
package com.gavin.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", -1);
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 e, Put put, WALEdit edit, Durability durability) throws IOException {
try {
String indexId = new String(put.getRow());
Map> familyMap = put.getFamilyCellMap();
// NavigableMap> familyMap = put.getFamilyCellMap();
Map json = new HashMap();
for (Map.Entry> 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 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
package com.gavin.observer;
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));
// 2.3.5
client = 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 {
@Override
public void run() {
commitLock.lock();
try {
bulkRequest(0);
} 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-hb0.98-es2.3.5.jar
hdfs dfs -put observer-hb0.98-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):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
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):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
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:@192.168.16.223:1521/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
6.校验
HBase
scan 'region'
ES
ES Head
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