def testHBase(self):
conf = HBaseConfiguration()
tablename = "Trees"
admin = HBaseAdmin(conf)
if not admin.tableExists(tablename):
sys.stderr.write('\nERROR - Table name not found: ' + tablename +
'\n\n')
exit(1)
# From org.apache.hadoop.hbase.client, create an HTable.
table = HTable(conf, tablename)
print 'connection successful'
# Create the HBaseTable Object.
hbtable = HBaseTable(tablename, conf, admin)
# Read a single row from the table.
rowId = '005430000000000038000163'
# Put a row into the table.
row = hbtable.row(rowId)
row.put('f', 'name', "xxxxxxxxxxxxxxxxxxxxxxx")
row.tablePut()
# Read the row back from the table.
print hbtable.row(rowId).get('f', 'name')
def scan(self, start_row=None, end_row=None, filter=None):
'''
Read the table including and between start and end rows
applying the given filter.
'''
if not self._table:
self._table = HTable(self.conf, self.name)
sc = None
if start_row and filter:
sc = Scan(start_row, filter)
elif start_row and end_row:
sc = Scan(start_row, end_row)
elif start_row:
sc = Scan(start_row)
else:
sc = Scan()
s = self._table.getScanner(sc)
while True:
r = s.next()
if r is None:
raise StopIteration()
yield r
def __init__(self, tablename, conf=None):
if conf is None:
conf = HBaseConfiguration()
self.table = HTable(conf, tablename)
def row(self, rowId):
if not self._table:
self._table = HTable(self.conf, self.name)
return HBaseRow(self._table, rowId)
from org.apache.hadoop.hbase import HBaseConfiguration
from org.apache.hadoop.hbase.client import HTable, Get
from org.apache.hadoop.hbase.util import Bytes
conf = HBaseConfiguration.create()
table = HTable(conf, "test")
get = Get(Bytes.toBytes('row1'))
result = table.get(get)
value = result.getValue(Bytes.toBytes('cf'), Bytes.toBytes('col1'))
print Bytes.toString(value, 0, len(value))
