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https://issues.apache.org/jira/browse/BEAM-6638?focusedWorklogId=199227&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-199227
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ASF GitHub Bot logged work on BEAM-6638:
----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Feb/19 13:30
Start Date: 15/Feb/19 13:30
Worklog Time Spent: 10m
Work Description: robertwb commented on pull request #7792: [BEAM-6638]
Python ExternalTransform output mismatched
URL: https://github.com/apache/beam/pull/7792#discussion_r257231499
##########
File path: sdks/python/apache_beam/examples/wordcount_xlang.py
##########
@@ -0,0 +1,122 @@
+#
+# 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.
+#
+
+"""A cross-language word-counting workflow."""
+
+from __future__ import absolute_import
+
+import argparse
+import logging
+import re
+import subprocess
+
+import grpc
+
+import apache_beam as beam
+from apache_beam.io import ReadFromText
+from apache_beam.io import WriteToText
+from apache_beam.options.pipeline_options import PipelineOptions
+from apache_beam.options.pipeline_options import SetupOptions
+
+EXPANSION_SERVICE_PORT = '8097'
+EXPANSION_SERVICE_ADDR = 'localhost:%s' % EXPANSION_SERVICE_PORT
+
+
+class WordExtractingDoFn(beam.DoFn):
+ """Parse each line of input text into words."""
+
+ def process(self, element):
+ """Returns an iterator over the words of this element.
+
+ The element is a line of text. If the line is blank, note that, too.
+
+ Args:
+ element: the element being processed
+
+ Returns:
+ The processed element.
+ """
+ text_line = element.strip()
+ words = [bytes(x) for x in re.findall(r'[\w\']+', text_line)]
Review comment:
Add a note as to why bytes is used.
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Issue Time Tracking
-------------------
Worklog Id: (was: 199227)
Time Spent: 1h 40m (was: 1.5h)
> Python ExternalTransform output mismatched
> ------------------------------------------
>
> Key: BEAM-6638
> URL: https://issues.apache.org/jira/browse/BEAM-6638
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Heejong Lee
> Assignee: Heejong Lee
> Priority: Major
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> Java PipelineValidator prints out the error that an expanded external
> transform points to unknown output PCollection.
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