beam-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From GitBox <...@apache.org>
Subject [GitHub] [beam] robertwb commented on a change in pull request #11060: [BEAM-9454] Create Deduplication transform based on user timer/state
Date Mon, 23 Mar 2020 18:50:08 GMT
robertwb commented on a change in pull request #11060: [BEAM-9454] Create Deduplication transform
based on user timer/state
URL: https://github.com/apache/beam/pull/11060#discussion_r396680799
 
 

 ##########
 File path: sdks/python/apache_beam/transforms/deduplicate.py
 ##########
 @@ -0,0 +1,133 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# pytype: skip-file
+
+"""a collection of ptransforms for deduplicating elements."""
+
+from __future__ import absolute_import
+from __future__ import division
+
+import typing
+
+from apache_beam import typehints
+from apache_beam.coders.coders import BooleanCoder
+from apache_beam.transforms import core
+from apache_beam.transforms import ptransform
+from apache_beam.transforms import userstate
+from apache_beam.transforms.timeutil import TimeDomain
+from apache_beam.utils import timestamp
+
+__all__ = [
+    'Deduplicate',
+    'DeduplicatePerKey',
+]
+
+K = typing.TypeVar('K')
+V = typing.TypeVar('V')
+
+
+@typehints.with_input_types(typing.Tuple[K, V])
+@typehints.with_output_types(typing.Tuple[K, V])
+class DeduplicatePerKey(ptransform.PTransform):
+  """ A PTransform which deduplicates <key, value> pair over a time domain and
+  threshold. Values in different windows will NOT be considered duplicates of
+  each other. Deduplication is best effort.
 
 Review comment:
   It's not really best effort, rather it is only respected within the time domains (and there
you can count on it). 

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services

Mime
View raw message