更新时间:2021-03-18 GMT+08:00
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删除表

功能简介

HBase通过org.apache.hadoop.hbase.client.Admin的deleteTable方法来删除表。

代码样例

public void dropTable() {
  LOG.info("Entering dropTable.");
  Admin admin = null;
  try {
    admin = conn.getAdmin();
    if (admin.tableExists(tableName)) {
      // Disable the table before deleting it.
      admin.disableTable(tableName);
      // Delete table.
      admin.deleteTable(tableName);//注[1]
    }
    LOG.info("Drop table successfully.");
  } catch (IOException e) {
    LOG.error("Drop table failed " ,e);
  } finally {
    if (admin != null) {
      try {
        // Close the Admin object.
        admin.close();
      } catch (IOException e) {
        LOG.error("Close admin failed " ,e);
      }
    }
  }
  LOG.info("Exiting dropTable.");
}

注意事项

注[1] 只有在调用disableTable接口后, 再调用deleteTable接口才能将表删除成功。因此,deleteTable常与disableTable,enableTable,tableExists,isTableEnabled,isTableDisabled结合在一起使用。

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