1、创建表myuser
public static void createTable() throws IOException {
Configuration conf =new Configuration();
//连接hbase集群不需要指定hbase主节点的ip地址和端口号
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
//创建连接对象
Connection connection = ConnectionFactory.createConnection(conf);
//获取连接对象,创建一张表
//获取管理员对象,来对数据库进行DDL的操作
Admin admin = connection.getAdmin();
//指定我们的表名
TableName myuser = TableName.valueOf("myuser");
HTableDescriptor hTableDescriptor = new HTableDescriptor(myuser);
//指定两个列族
HColumnDescriptor f1 = new HColumnDescriptor("f1");
HColumnDescriptor f2 = new HColumnDescriptor("f2");
hTableDescriptor.addFamily(f1);
hTableDescriptor.addFamily(f2);
admin.createTable(hTableDescriptor);
admin.close();
connection.close();
}
2、向表中添加数据
/**
* 插入数据
*/
public void addDatas() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum", "node01:2181,node02:2181");
Connection connection = ConnectionFactory.createConnection(conf);
//获取表
Table myuser = connection.getTable(TableName.valueOf("myuser"));
//创建put对象,并指定rowkey
Put put = new Put("0001".getBytes());
put.addColumn("f1".getBytes(),"id".getBytes(), Bytes.toBytes(1));
put.addColumn("f1".getBytes(),"name".getBytes(), Bytes.toBytes("张三"));
put.addColumn("f1".getBytes(),"age".getBytes(), Bytes.toBytes(18));
put.addColumn("f2".getBytes(),"address".getBytes(), Bytes.toBytes("地球人"));
put.addColumn("f2".getBytes(),"phone".getBytes(), Bytes.toBytes("15874102589"));
//插入数据
myuser.put(put);
//关闭表
myuser.close();
}
3、查询数据
初始化一批数据到HBase当中用于查询
public void insertBatchData() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum", "node01:2181,node02:2181");
Connection connection = ConnectionFactory.createConnection(conf);
//获取表
Table myuser = connection.getTable(TableName.valueOf("myuser"));
//创建put对象,并指定rowkey
Put put = new Put("0002".getBytes());
put.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(1));
put.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("曹操"));
put.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(30));
put.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
put.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("沛国谯县"));
put.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("16888888888"));
put.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("helloworld"));
Put put2 = new Put("0003".getBytes());
put2.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(2));
put2.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("刘备"));
put2.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(32));
put2.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
put2.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("幽州涿郡涿县"));
put2.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("17888888888"));
put2.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("talk is cheap , show me the code"));
Put put3 = new Put("0004".getBytes());
put3.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(3));
put3.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("孙权"));
put3.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(35));
put3.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
put3.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("下邳"));
put3.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("12888888888"));
put3.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("what are you 弄啥嘞!"));
Put put4 = new Put("0005".getBytes());
put4.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(4));
put4.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("诸葛亮"));
put4.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(28));
put4.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
put4.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("四川隆中"));
put4.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("14888888888"));
put4.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("出师表你背了嘛"));
Put put5 = new Put("0005".getBytes());
put5.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(5));
put5.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("司马懿"));
put5.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(27));
put5.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
put5.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("哪里人有待考究"));
put5.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("15888888888"));
put5.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("跟诸葛亮死掐"));
Put put6 = new Put("0006".getBytes());
put6.addColumn("f1".getBytes(),"id".getBytes(),Bytes.toBytes(5));
put6.addColumn("f1".getBytes(),"name".getBytes(),Bytes.toBytes("xiaobubu—吕布"));
put6.addColumn("f1".getBytes(),"age".getBytes(),Bytes.toBytes(28));
put6.addColumn("f2".getBytes(),"sex".getBytes(),Bytes.toBytes("1"));
put6.addColumn("f2".getBytes(),"address".getBytes(),Bytes.toBytes("内蒙人"));
put6.addColumn("f2".getBytes(),"phone".getBytes(),Bytes.toBytes("15788888888"));
put6.addColumn("f2".getBytes(),"say".getBytes(),Bytes.toBytes("貂蝉去哪了"));
List listPut = new ArrayList();
listPut.add(put);
listPut.add(put2);
listPut.add(put3);
listPut.add(put4);
listPut.add(put5);
listPut.add(put6);
myuser.put(listPut);
myuser.close();
}
/**
* 查询数据,按照主键id进行查询
*/
public void searchData() throws IOException {
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Get get = new Get(Bytes.toBytes("0003"));
Result result = myuser.get(get);
Cell[] cells = result.rawCells();
//获取所有的列名称以及列的值
for (Cell cell : cells) {
//注意,如果列属性是int类型,那么这里就不会显示
if (Bytes.toString(CellUtil.cloneQualifier(cell)).equals("id" )|| Bytes.toString(CellUtil.cloneQualifier(cell)).equals("age")){
System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
System.out.println(Bytes.toInt(CellUtil.cloneValue(cell)));
}else {
System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
System.out.println(Bytes.toString(CellUtil.cloneValue(cell)));
}
}
myuser.close();
}
public static void searchdata2() throws IOException{
Configuration conf=new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Get get=new Get("0003".getBytes());
// get.addFamily("f1".getBytes());
get.addColumn("f1".getBytes(),"name".getBytes());
Result result = myuser.get(get);
Cell[] cells = result.rawCells();
for (Cell cell : cells) {
if (Bytes.toString(CellUtil.cloneQualifier(cell)).equals("id" )|| Bytes.toString(CellUtil.cloneQualifier(cell)).equals("age")){
System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
System.out.println(Bytes.toInt(CellUtil.cloneValue(cell)));
}else {
System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
System.out.println(Bytes.toString(CellUtil.cloneValue(cell)));
}
}
}
/**
* 通过startRowKey和endRowKey进行扫描查询
*/
public static void scanrowkey() throws IOException{
Configuration conf=new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan =new Scan();
scan.setStartRow("0002".getBytes());
scan.setStopRow("0006".getBytes());
ResultScanner scanner = myuser.getScanner(scan);
for (Result result : scanner) {
System.out.println("rowkey "+Bytes.toString(result.getRow()));
/*
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(),"id".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(),"name".getBytes())));
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(),"age".getBytes())));
*/
Cell[] cells = result.rawCells();
for (Cell cell : cells) {
if (Bytes.toString(CellUtil.cloneQualifier(cell)).equals("id" )|| Bytes.toString(CellUtil.cloneQualifier(cell)).equals("age")){
System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
System.out.println(Bytes.toInt(CellUtil.cloneValue(cell)));
}else {
System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
System.out.println(Bytes.toString(CellUtil.cloneValue(cell)));
}
}
}
}
/**
* 全表扫描
*/
public static void scanrow() throws IOException{
Configuration conf=new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan =new Scan();
ResultScanner scanner = myuser.getScanner(scan);
for (Result result : scanner) {
System.out.println("rowkey "+Bytes.toString(result.getRow()));
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(),"id".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(),"name".getBytes())));
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(),"age".getBytes())));
/* Cell[] cells = result.rawCells();
for (Cell cell : cells) {
if (Bytes.toString(CellUtil.cloneQualifier(cell)).equals("id" )|| Bytes.toString(CellUtil.cloneQualifier(cell)).equals("age")){
System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
System.out.println(Bytes.toInt(CellUtil.cloneValue(cell)));
}else {
System.out.println(Bytes.toString(CellUtil.cloneFamily(cell)));
System.out.println(Bytes.toString(CellUtil.cloneQualifier(cell)));
System.out.println(Bytes.toString(CellUtil.cloneRow(cell)));
System.out.println(Bytes.toString(CellUtil.cloneValue(cell)));
}
}*/
}
}
过滤器的类型很多,但是可以分为两大类——比较过滤器,专用过滤器
过滤器的作用是在服务端判断数据是否满足条件,然后只将满足条件的数据返回给客户端;
hbase过滤器的比较运算符:
LESS <
LESS_OR_EQUAL <=
EQUAL =
NOT_EQUAL <>
GREATER_OR_EQUAL >=
GREATER >
NO_OP 排除所有
Hbase过滤器的专用过滤器(指定比较机制):
BinaryComparator 按字节索引顺序比较指定字节数组,采用Bytes.compareTo(byte[])
BinaryPrefixComparator 跟前面相同,只是比较左端的数据是否相同
NullComparator 判断给定的是否为空
BitComparator 按位比较
RegexStringComparator 提供一个正则的比较器,仅支持 EQUAL 和非EQUAL
SubstringComparator 判断提供的子串是否出现在value中。
1、
1、rowKey过滤器RowFilter
通过RowFilter过滤比rowKey 0003小的所有值出来
/**
* hbase行键过滤器RowFilter
*/
public void rowKeyFilter() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan = new Scan();
RowFilter rowFilter = new RowFilter(CompareFilter.CompareOp.LESS_OR_EQUAL, new BinaryComparator(Bytes.toBytes("0003")));
scan.setFilter(rowFilter);
ResultScanner resultScanner = myuser.getScanner(scan);
for (Result result : resultScanner) {
//获取rowkey
System.out.println(Bytes.toString(result.getRow()));
//指定列族以及列打印列当中的数据出来
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "age".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
}
myuser.close();
}
2、列族过滤器FamilyFilter
查询比f2列族小的所有的列族内的数据
/**
* hbase列族过滤器FamilyFilter
*/
public void familyFilter() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan = new Scan();
FamilyFilter familyFilter = new FamilyFilter(CompareFilter.CompareOp.LESS, new SubstringComparator("f2"));
scan.setFilter(familyFilter);
ResultScanner resultScanner = myuser.getScanner(scan);
for (Result result : resultScanner) {
//获取rowkey
System.out.println(Bytes.toString(result.getRow()));
//指定列族以及列打印列当中的数据出来
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "age".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
}
myuser.close();
}
/**
* hbase列过滤器
*/
public void qualifierFilter() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan = new Scan();
QualifierFilter qualifierFilter = new QualifierFilter(CompareFilter.CompareOp.EQUAL, new SubstringComparator("name"));
scan.setFilter(qualifierFilter);
ResultScanner resultScanner = myuser.getScanner(scan);
for (Result result : resultScanner) {
//获取rowkey
System.out.println(Bytes.toString(result.getRow()));
//指定列族以及列打印列当中的数据出来
// System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
}
myuser.close();
}
4、列值过滤器ValueFilter
查询所有列当中包含8的数据
/**
* hbase值过滤器
* 查询包含8的列值
*/
public void valueFilter() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan = new Scan();
ValueFilter valueFilter = new ValueFilter(CompareFilter.CompareOp.EQUAL, new SubstringComparator("8"));
scan.setFilter(valueFilter);
ResultScanner resultScanner = myuser.getScanner(scan);
for (Result result : resultScanner) {
//获取rowkey
System.out.println(Bytes.toString(result.getRow()));
//指定列族以及列打印列当中的数据出来
// System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
}
myuser.close();
}
1、单列值过滤器 SingleColumnValueFilter
SingleColumnValueFilter会返回满足条件的整列值的所有字段
/**
* 单列值过滤器,返回满足条件的整行数据
*/
public void singleColumnFilter() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan = new Scan();
SingleColumnValueFilter singleColumnValueFilter = new SingleColumnValueFilter("f1".getBytes(), "name".getBytes(), CompareFilter.CompareOp.EQUAL, "刘备".getBytes());
scan.setFilter(singleColumnValueFilter);
ResultScanner resultScanner = myuser.getScanner(scan);
for (Result result : resultScanner) {
//获取rowkey
System.out.println(Bytes.toString(result.getRow()));
//指定列族以及列打印列当中的数据出来
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
}
myuser.close();
}
2、列值排除过滤器SingleColumnValueExcludeFilter
与SingleColumnValueFilter相反,会排除掉指定的列,其他的列全部返回
3、rowkey前缀过滤器PrefixFilter
查询以00开头的所有前缀的rowkey
/**
* 行键前缀过滤器
*/
public void preFilter() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan = new Scan();
PrefixFilter prefixFilter = new PrefixFilter("00".getBytes());
scan.setFilter(prefixFilter);
ResultScanner resultScanner = myuser.getScanner(scan);
for (Result result : resultScanner) {
//获取rowkey
System.out.println(Bytes.toString(result.getRow()));
//指定列族以及列打印列当中的数据出来
System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
}
myuser.close();
}
public void pageFilter2() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum", "node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
int pageNum = 3;
int pageSize = 2;
Scan scan = new Scan();
if (pageNum == 1) {
PageFilter filter = new PageFilter(pageSize);
scan.setStartRow(Bytes.toBytes(""));
scan.setFilter(filter);
scan.setMaxResultSize(pageSize);
ResultScanner scanner = myuser.getScanner(scan);
for (Result result : scanner) {
//获取rowkey
System.out.println(Bytes.toString(result.getRow()));
//指定列族以及列打印列当中的数据出来
// System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
//System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
}
}else{
String startRowKey ="";
PageFilter filter = new PageFilter((pageNum - 1) * pageSize + 1 );
scan.setStartRow(startRowKey.getBytes());
scan.setMaxResultSize((pageNum - 1) * pageSize + 1);
scan.setFilter(filter);
ResultScanner scanner = myuser.getScanner(scan);
for (Result result : scanner) {
byte[] row = result.getRow();
startRowKey = new String(row);
}
Scan scan2 = new Scan();
scan2.setStartRow(startRowKey.getBytes());
scan2.setMaxResultSize(Long.valueOf(pageSize));
PageFilter filter2 = new PageFilter(pageSize);
scan2.setFilter(filter2);
ResultScanner scanner1 = myuser.getScanner(scan2);
for (Result result : scanner1) {
byte[] row = result.getRow();
System.out.println(new String(row));
}
}
myuser.close();
}
3、多过滤器综合查询FilterList
需求:使用SingleColumnValueFilter查询f1列族,name为刘备的数据,并且同时满足rowkey的前缀以00开头的数据(PrefixFilter)
/**
* 多过滤器组合使用
*/
public void manyFilter() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum", "node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Scan scan = new Scan();
FilterList filterList = new FilterList();
SingleColumnValueFilter singleColumnValueFilter = new SingleColumnValueFilter("f1".getBytes(), "name".getBytes(), CompareFilter.CompareOp.EQUAL, "刘备".getBytes());
PrefixFilter prefixFilter = new PrefixFilter("00".getBytes());
filterList.addFilter(singleColumnValueFilter);
filterList.addFilter(prefixFilter);
scan.setFilter(filterList);
ResultScanner scanner = myuser.getScanner(scan);
for (Result result : scanner) {
//获取rowkey
System.out.println(Bytes.toString(result.getRow()));
//指定列族以及列打印列当中的数据出来
// System.out.println(Bytes.toInt(result.getValue("f1".getBytes(), "id".getBytes())));
System.out.println(Bytes.toString(result.getValue("f1".getBytes(), "name".getBytes())));
//System.out.println(Bytes.toString(result.getValue("f2".getBytes(), "phone".getBytes())));
}
myuser.close();
}
/**
* 删除数据
*/
public void deleteByRowKey() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Table myuser = connection.getTable(TableName.valueOf("myuser"));
Delete delete = new Delete("0001".getBytes());
myuser.delete(delete);
myuser.close();
}
6、删除表操作
public void deleteTable() throws IOException {
//获取连接
Configuration conf =new Configuration();
conf.set("hbase.zookeeper.quorum","node01:2181,node02:2181,node03:2181");
Connection connection = ConnectionFactory.createConnection(conf);
Admin admin = connection.getAdmin();
admin.disableTable(TableName.valueOf("myuser"));
admin.deleteTable(TableName.valueOf("myuser"));
admin.close();
}