我正在使用hbase java客户端,并且能够从所有表名,列族和列中获取hbase数据存储的元数据,但我无法获取数据类型HBase的专栏中,我搜索谷歌和才知道,这是不可能得到的数据HBase列数据类型
具有HBase的Java客户端HTableDescriptor
的帮助的类型,HColumnDescriptor
另一个问题是我收到的元数据这我认为这不是方式,如果任何人可以优化此代码将真的帮助我
public List<ColumnFamily> getMetaDataOfTable(String tableName) {
HTable table = null;
try {
HTableDescriptor tableDescriptor = admin.getTableDescriptor(Bytes
.toBytes(tableName));
HColumnDescriptor[] columnDescriptor = tableDescriptor
.getColumnFamilies();
for (HColumnDescriptor temp : columnDescriptor) {
ColumnFamily columnFamily = new ColumnFamily();
columnFamily.setName(temp.getNameAsString());
columnFamilies.add(columnFamily);
}
table = new HTable(conf, tableName);
Scan scan = new Scan();
for (ColumnFamily columnFamily : columnFamilies) {
scan.addFamily(Bytes.toBytes(columnFamily.getName()));
ResultScanner scanner = table.getScanner(scan);
for (Result result = scanner.next(); result != null; result = scanner
.next()) {
Map<byte[], byte[]> map = result.getFamilyMap(Bytes
.toBytes(columnFamily.getName()));
columnFamily.setColumnsList(getColumns(map));
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
table.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return columnFamilies;
}
请帮助我,如果你能 感谢