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OBKV HBase Client

OBKV HBase Client is Java Library that can be used to access data from OceanBase by HBase-0.94 API.

Quick start

Create table in the OceanBase database:

CREATE TABLE `test1$family1` (
    `K` varbinary(1024) NOT NULL,
    `Q` varbinary(256) NOT NULL,
    `T` bigint(20) NOT NULL,
    `V` varbinary(1024) DEFAULT NULL,
    PRIMARY KEY (`K`, `Q`, `T`)
);

Note:

  • test1: HBase table name;
  • family1: HBase column family name.

Import the dependency for your maven project:

<dependency>
    <groupId>com.oceanbase</groupId>
    <artifactId>obkv-hbase-client</artifactId>
    <version>0.1.5</version>
</dependency>

Note:

  • This example version is not kept up-to-date. So check the releases page for the latest version frequently.

The code demo:

import com.alipay.oceanbase.hbase.OHTableClient;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;

import static com.alipay.oceanbase.hbase.constants.OHConstants.*;
import static org.apache.hadoop.hbase.util.Bytes.toBytes;

public class simpleTest {
    public static void main(String[] args) throws Exception {
        // 1. initial client for table test1
        Configuration conf = new Configuration();
        conf.set(HBASE_OCEANBASE_PARAM_URL, "PARAM_URL");
        conf.set(HBASE_OCEANBASE_FULL_USER_NAME, "FULL_USER_NAME");
        conf.set(HBASE_OCEANBASE_PASSWORD, "PASSWORD");
        conf.set(HBASE_OCEANBASE_SYS_USER_NAME, "SYS_USER_NAME");
        conf.set(HBASE_OCEANBASE_SYS_PASSWORD, "SYS_PASSWORD");
        OHTableClient hTable = new OHTableClient("test1", conf);
        hTable.init();

        // 2. put data like hbase
        byte[] family = toBytes("family1");
        byte[] rowKey = toBytes("rowKey1");
        byte[] column = toBytes("column1");
        Put put = new Put(rowKey);
        put.add(family, column, System.currentTimeMillis(), toBytes("value1"));
        hTable.put(put);

        // 3. get data like hbase
        Get get = new Get(rowKey);
        get.addColumn(family, column);
        Result r = hTable.get(get);
        System.out.printf("column1: " + r.getColumn(family, column));
    }
}

NOTE:

  • param_url is generated by ConfigServer
  • More example [TODO]
  • full_user_name: the user for accessing obkv, which format is user_name@tenant_name#cluster_name
  • sys_user_name: root@sys or proxy@sys, which have privileges to access routing system view

Documentation

  • English [Coming soon]
  • Simplified Chinese (简体中文) [Coming soon]

Licencing

OBKV HBase Client is under MulanPSL - 2.0 licence. You can freely copy and use the source code. When you modify or distribute the source code, please obey the MulanPSL - 2.0 licence.

Contributing

Contributions are warmly welcomed and greatly appreciated. Here are a few ways you can contribute:

Support

In case you have any problems when using OceanBase Database, welcome reach out for help: