[
https://issues.apache.org/jira/browse/BEAM-2810?focusedWorklogId=118485&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-118485
]
ASF GitHub Bot logged work on BEAM-2810:
----------------------------------------
Author: ASF GitHub Bot
Created on: 02/Jul/18 23:23
Start Date: 02/Jul/18 23:23
Worklog Time Spent: 10m
Work Description: charlesccychen commented on issue #5496: [BEAM-2810]
use fastavro in Avro IO
URL: https://github.com/apache/beam/pull/5496#issuecomment-401966713
This change fails the isort lint test:
```
Running isort for module apache_beam gen_protos.py setup.py
test_config.py:
ERROR: /home/git/beam/sdks/python/apache_beam/io/avroio.py Imports are
incorrectly sorted.
--- /home/git/beam/sdks/python/apache_beam/io/avroio.py:before
2018-07-02 12:57:38.472207
+++ /home/git/beam/sdks/python/apache_beam/io/avroio.py:after
2018-07-02 16:20:40.310009
@@ -51,8 +51,6 @@
from avro import io as avroio
from avro import datafile
from avro import schema
-from fastavro.read import block_reader
-from fastavro.write import Writer
import apache_beam as beam
from apache_beam.io import filebasedsink
@@ -61,6 +59,8 @@
from apache_beam.io.filesystem import CompressionTypes
from apache_beam.io.iobase import Read
from apache_beam.transforms import PTransform
+from fastavro.read import block_reader
+from fastavro.write import Writer
__all__ = ['ReadFromAvro', 'ReadAllFromAvro', 'WriteToAvro']
Command exited with non-zero status 1
```
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Issue Time Tracking
-------------------
Worklog Id: (was: 118485)
Time Spent: 5h 40m (was: 5.5h)
> 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: 5h 40m
> 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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