本文整理汇总了Python中airflow.hooks.hive_hooks.HiveMetastoreHook.check_for_partition方法的典型用法代码示例。如果您正苦于以下问题：Python HiveMetastoreHook.check_for_partition方法的具体用法？Python HiveMetastoreHook.check_for_partition怎么用？Python HiveMetastoreHook.check_for_partition使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类airflow.hooks.hive_hooks.HiveMetastoreHook的用法示例。
在下文中一共展示了HiveMetastoreHook.check_for_partition方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: HivePartitionSensor
# 需要导入模块: from airflow.hooks.hive_hooks import HiveMetastoreHook [as 别名]
# 或者: from airflow.hooks.hive_hooks.HiveMetastoreHook import check_for_partition [as 别名]
class HivePartitionSensor(BaseSensorOperator):
"""
Waits for a partition to show up in Hive.
Note: Because ``partition`` supports general logical operators, it
can be inefficient. Consider using NamedHivePartitionSensor instead if
you don't need the full flexibility of HivePartitionSensor.
:param table: The name of the table to wait for, supports the dot
notation (my_database.my_table)
:type table: string
:param partition: The partition clause to wait for. This is passed as
is to the metastore Thrift client ``get_partitions_by_filter`` method,
and apparently supports SQL like notation as in ``ds='2015-01-01'
AND type='value'`` and comparison operators as in ``"ds>=2015-01-01"``
:type partition: string
:param metastore_conn_id: reference to the metastore thrift service
connection id
:type metastore_conn_id: str
"""
template_fields = ('schema', 'table', 'partition',)
ui_color = '#C5CAE9'
@apply_defaults
def __init__(
self,
table, partition="ds='{{ ds }}'",
metastore_conn_id='metastore_default',
schema='default',
poke_interval=60*3,
*args, **kwargs):
super(HivePartitionSensor, self).__init__(
poke_interval=poke_interval, *args, **kwargs)
if not partition:
partition = "ds='{{ ds }}'"
self.metastore_conn_id = metastore_conn_id
self.table = table
self.partition = partition
self.schema = schema
def poke(self, context):
if '.' in self.table:
self.schema, self.table = self.table.split('.')
self.log.info(
'Poking for table {self.schema}.{self.table}, '
'partition {self.partition}'.format(**locals()))
if not hasattr(self, 'hook'):
from airflow.hooks.hive_hooks import HiveMetastoreHook
self.hook = HiveMetastoreHook(
metastore_conn_id=self.metastore_conn_id)
return self.hook.check_for_partition(
self.schema, self.table, self.partition)