talend 将hbase中数据导入到mysql中
首先,解决talend连接hbase的问题:
公司使用的机器是HDP2.2的机器,上面配置好Hbase服务,在集群的/etc/hbase/conf/hbase-site.xml下,有如下配置:
<property> <name>zookeeper.znode.parent</name> <value>/hbase-unsecure</value> </property>
这个配置是决定, Hbase master在zookeeper中,存储数据的根节点,如果不特别设置,默认位置是:/hbase (这个坑了我好久呀。。。,经过漫长的研究,终于顿悟,着实不易呀)。
在设置hbase databae时,配置如下:
测试zk的联通性:
[zookeeper@hdp1 ~]$ zookeeper-client -server 172.28.3.61:2181 [zk: 172.28.3.61:2181(CONNECTED) 15] ls / [hiveserver2, controller_epoch, controller, brokers, zookeeper, hbase-unsecure, hadoop-ha, rmstore, admin, consumers, config] [zk: 172.28.3.61:2181(CONNECTED) 16] ls /hbase-unsecure [replication, meta-region-server, rs, splitWAL, backup-masters, table-lock, region-in-transition, online-snapshot, master, running, recovering-regions, draining, namespace, hbaseid, table]
最后的状态是连接成功:
连接成功后,retrive schema:
在hbase中,表格信息如下:
hbase(main):047:0> scan 'zhangchao' ROW COLUMN+CELL example column=cc2:name, timestamp=1436838509057, value=justin example2 column=cc1:age, timestamp=1436838869051, value=38 example3 column=cc1:sex, timestamp=1436839082133, value=male example4 column=cc1:age, timestamp=1436854903976, value=334 4 row(s) in 0.0270 seconds hbase(main):048:0> describe 'zhangchao' DESCRIPTION ENABLED 'zhangchao', {NAME => 'cc1', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_M true EMORY => 'false', KEEP_DELETED_CELLS => 'false', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRESSION => 'NONE', MIN_VERSIONS => '0', BL OCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'}, {NA ME => 'cc2', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false' , KEEP_DELETED_CELLS => 'false', DATA_BLOCK_ENCODING => 'NONE', TTL => ' FOREVER', COMPRESSION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'tru e', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'} 1 row(s) in 0.0770 seconds
mysql中表的结构如下:
建立Talend模型,将hbase中的数据导入到mysql中:
执行后,mysql中的表中有了hbase的信息:
这样hbase到mysql的数据通道就算打通,问题的关键其实是,如何设计mysql里的行数据,让其转换为hbase中的类数据,因为hbase是列式存储,按照表->行->列簇:列->值的形式来存储。