hbase client example will show how to use hbase with java api
include ddl and dml
ddl : list tables,create table ,alter table,read region location,compact,split
dml: put,batch put,delete,increment,scan,get
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Windows or Linux or Mac OS X
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Java 8
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Maven 3.6.3
git clone https://github.com/utf7/hbase-client-example.git
cd hbase-client-example
mvn clean packagehbase-site.xml is the config file for hbase client to use
a simple hbase-site.xml client config like
<configuration>
<property>
<name>hbase.zookeeper.quorum</name>
<value>zk1,zk2,zk3</value>
</property>
<property>
<name>hbase.zookeeper.property.clientPort</name>
<value>2181</value>
</property>
<property>
<name>zookeeper.znode.parent</name>
<value>/hbase</value>
</property>
</configuration>
if your hbase-site.xml in the folder /home/conf/
java -cp /home/conf/:hbase-client-example-1.0.jar com.github.utf7.hbase.client.example.HBaseDemo 100 100 means write 100 rows data to hbase
merge region
thin jar mode
java -cp "original-hbase-client-example.jar:/usr/local/hbase/lib/*:/usr/local/hbase/conf/" com.github.utf7.hbase.tool.RegionTool "default:test_to_merge_tb" 1024Bytes.toString(regionInfo.getRegionName()) : hb_test,,1647862081929.adfbdd6411c6015c2b93ec0189f7ec8d.
getRegionNameAsString : hb_test,,1647862081929.adfbdd6411c6015c2b93ec0189f7ec8d.
Bytes.toString(regionInfo.getEncodedNameAsBytes()): adfbdd6411c6015c2b93ec0189f7ec8d
getEncodedName : adfbdd6411c6015c2b93ec0189f7ec8d
getRegionId : 1647862081929create 'test', {NAME => 'f1', VERSIONS => '1', COMPRESSION => 'GZ', DATA_BLOCK_ENCODING => 'FAST_DIFF', CONFIGURATION => {'hbase.hstore.compaction.max' => '15','hbase.hstore.compaction.min' => '7','hbase.hregion.max.filesize' => '21474836480', 'hbase.hregion.majorcompaction' => '0'}},{NUMREGIONS => 30,SPLITALGO => 'DecimalStringSplit'}