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https://issues.apache.org/jira/browse/BEAM-2810?focusedWorklogId=114983&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-114983
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ASF GitHub Bot logged work on BEAM-2810:
----------------------------------------
Author: ASF GitHub Bot
Created on: 23/Jun/18 00:53
Start Date: 23/Jun/18 00:53
Worklog Time Spent: 10m
Work Description: chamikaramj commented on a change in pull request
#5496: [BEAM-2810] use fastavro in Avro IO
URL: https://github.com/apache/beam/pull/5496#discussion_r197596799
##########
File path: sdks/python/apache_beam/examples/avro_bitcoin.py
##########
@@ -0,0 +1,163 @@
+#
+# 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.
+#
+
+"""Collect statistics on transactions in a public bitcoin dataset that was
Review comment:
Please add instructions for running the example so that users can try this
out.
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Issue Time Tracking
-------------------
Worklog Id: (was: 114983)
Time Spent: 2h 20m (was: 2h 10m)
> Consider a faster Avro library in Python
> ----------------------------------------
>
> Key: BEAM-2810
> URL: https://issues.apache.org/jira/browse/BEAM-2810
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Eugene Kirpichov
> Assignee: Ryan Williams
> Priority: Major
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> https://stackoverflow.com/questions/45870789/bottleneck-on-data-source
> Seems like this job is reading Avro files (exported by BigQuery) at about 2
> MB/s.
> We use the standard Python "avro" library which is apparently known to be
> very slow (10x+ slower than Java)
> http://apache-avro.679487.n3.nabble.com/Avro-decode-very-slow-in-Python-td4034422.html,
> and there are alternatives e.g. https://pypi.python.org/pypi/fastavro/
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