推荐回答(1个)
1. HBaseConfiguration是每一个hbase client都会使用到的对象,它代表的是HBase配置信息。它有两种构造方式:
public HBaseConfiguration()
public HBaseConfiguration(final Configuration c)
2. HBaseAdmin来创建表。HBaseAdmin负责表的META信息处理。HBaseAdmin提供了createTable这个方法:
public void createTable(HTableDescriptor desc)
3. addFamily方法增加family
public void addFamily(final HColumnDescriptor family)
4. 删除表
删除表也是通过HBaseAdmin来操作,删除表之前首先要disable表。
disableTable和deleteTable分别用来disable和delete表。
5. 查询数据
单条查询是通过rowkey在table中查询某一行的数据。HTable提供了get方法来完成单条查询。
批量查询是通过制定一段rowkey的范围来查询。HTable提供了个getScanner方法来完成批量查询。
public Result get(final Get get)
public ResultScanner getScanner(final Scan scan)
6. 插入数据 HTable通过put方法来插入数据。
public void put(final Put put) throws IOException
public void put(final List puts) throws IOException
7. 切分表
HBaseAdmin提供split方法来将table 进行split.
public void split(final String tableNameOrRegionName)
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