Hbase 预分区建表

    private static Admin admin = null;
    private static final String user = "admin/[email protected]";
    private static final String keyPath = "/etc/security/keytabs/admin.keytab";
    static {
        System.setProperty("java.security.krb5.conf", "/etc/krb5.conf");
        System.setProperty("sun.security.krb5.debug", "false");
        Configuration conf = new Configuration();
        conf.addResource("hbase-site.xml");
        conf.set("hbase.zookeeper.quorum", "storm4.demo.com,storm2.demo.com,storm3.demo.com");
        conf.set(HConstants.ZOOKEEPER_CLIENT_PORT, "2181");
        conf.set(HConstants.ZOOKEEPER_ZNODE_PARENT, "/hbase-secure");
        conf.set("hbase.security.authentication", "kerberos");
        conf.set("hadoop.security.authentication", "kerberos");

        UserGroupInformation.setConfiguration(conf);
        try {
            UserGroupInformation.loginUserFromKeytab(user, keyPath);
        } catch (IOException e) {
            e.printStackTrace();
        }
        Connection connection= null;
        try {
            connection = ConnectionFactory.createConnection(conf);
        } catch (IOException e) {
            e.printStackTrace();
        }
        try {
            admin = connection.getAdmin();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public synchronized static Table getTable(String tableName) {
        try {
            return TABLE_MAP.get(tableName);
        } catch (ExecutionException e) {
            e.printStackTrace();
        }
        return null;
    }

    public synchronized static void createTable(String tableName) throws HBaseException {
        TableName table = TableName.valueOf(tableName);
        TableDescriptorBuilder tableDesc = TableDescriptorBuilder.newBuilder(table)
        tableDesc.setValue(TableDescriptorBuilder.SPLIT_POLICY, classOf[DelimitedKeyPrefixRegionSplitPolicy].getName)
        tableDesc.setValue(DelimitedKeyPrefixRegionSplitPolicy.DELIMITER_KEY, "|") //以|作为分区前缀

        ColumnFamilyDescriptor extCF = ColumnFamilyDescriptorBuilder.newBuilder("ext".getBytes()).setTimeToLive("90 DAYS").build();
        ColumnFamilyDescriptor deviceCF = ColumnFamilyDescriptorBuilder.newBuilder("device".getBytes()).setTimeToLive("90 DAYS").build();
        ColumnFamilyDescriptor locationCF = ColumnFamilyDescriptorBuilder.newBuilder("location".getBytes()).setTimeToLive("90 DAYS").build();
        tableDesc.setColumnFamilies(Arrays.asList(extCF, locationCF, deviceCF));
        try {
            val regionServers = 8
    val splitKeys = (0 until 256 by regionServers).map(Integer.toHexString).map(i => s"0$i".takeRight(2)).map(Bytes.toBytes).toArray
            admin.createTable(tableDesc.build(), splitKeys); //预分区
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    public static void main(String[] args) {
        try {
            createTable("DSP_LOG_TABLE");
        } catch (HBaseException e) {
            e.printStackTrace();
        }
    }