hbase-driver 0.0.13

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hbase-driver

Native Hbase driver in Python. (No thrift)

Introduction

• written in pure Python
• native HBase protocol support (HBase 2.X+)
• Support both admin operations and regionserver calls.

Installation (pip)

pip3 install hbase-driver

Get Started

import time
from hbasedriver.client import Client
from hbasedriver.operations import Put, Get, Scan, Delete
from hbasedriver.exceptions.RemoteException import TableExistsException
from hbasedriver.operations.column_family_builder import ColumnFamilyDescriptorBuilder

# lets say your hbase instance runs on 127.0.0.1 (zk quorum address)
client = Client(["127.0.0.1"])

# Define column families
cf1_builder = ColumnFamilyDescriptorBuilder(b"cf1")
cf1_builder.set_compression_type(b"SNAPPY")
cf1_builder.set_max_versions(5)
cf1_builder.set_time_to_live(86400)
cf1_builder.set_block_size(65536)
cf1_descriptor = cf1_builder.build()

cf2_builder = ColumnFamilyDescriptorBuilder(b"cf2")
cf2_builder.set_compression_type(b"LZO")
cf2_builder.set_max_versions(3)
cf2_builder.set_time_to_live(3600)
cf2_builder.set_block_size(32768)
cf2_descriptor = cf2_builder.build()

column_families = [cf1_descriptor, cf2_descriptor]

try:
    client.create_table(b"", b"test_table_master", column_families, split_keys=[b"111111", b"222222", b"333333"])
except TableExistsException:
    pass

table = client.get_table("", "mytable")
# put
table.put(Put(b'row1').add_column(b'cf1', b'qf', b'666'))
table.put(Put(b'row1').add_column(b'cf1', b'qf2', b'999'))
table.put(Put(b'row1').add_column(b'cf2', b'qf', b'777'))
table.put(Put(b'row2').add_column(b'cf1', b'qf123', b'777'))
# get
result = table.get(Get(b"row1").add_column(b'cf1', b'qf'))
print("get result =", result)
assert b'666' == result.get(b'cf1', b'qf')

# scan
scan_result = table.scan(Scan(b"row1").add_family(b'cf1'))
# retrieve all results from the iterator.
scan_result = list(scan_result)
print("scan result below:")
for row in scan_result:
    print(row)

# delete
table.delete(Delete(b"row1"))  # this will delete the whole row

# check cf deleted
result = table.get(Get(b"row1").add_column(b'cf1', b'qf'))
assert result is None

# disable table
client.master.disable_table(None, b"mytable")
time.sleep(1)
client.master.delete_table(None, b"mytable")

Master (metadata) operations

from hbasedriver.client import Client

client = Client(["127.0.0.1"])
# describe table
res = client.master.describe_table(None, "mytable")
print(res)
# table_name {
#     namespace: "default"
#     qualifier: "test_table_master"
#   }
#   attributes {
#     first: "IS_META"
#     second: "false"
#   }
#   attributes {
#     first: "hbase.store.file-tracker.impl"
#     second: "DEFAULT"
#   }
#   column_families {
#     name: "cf1"
#     attributes {
#       first: "INDEX_BLOCK_ENCODING"
#       second: "NONE"
#     }
# ..........

Implemented

• Create, Disable, Delete table
• Put
• Get
• DELETE
• Scan

TODOs

• Filters
• More params in the operations.