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Posted to commits@beam.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2016/06/21 02:11:57 UTC
[jira] [Commented] (BEAM-360) Add a framework for creating
Python-SDK sources for new file types
[ https://issues.apache.org/jira/browse/BEAM-360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15340898#comment-15340898 ]
ASF GitHub Bot commented on BEAM-360:
-------------------------------------
GitHub user chamikaramj opened a pull request:
https://github.com/apache/incubator-beam/pull/507
[BEAM-360] Implements a framework for developing Python SDK sources for new file types
Module 'filebasedsource' provides a framework for creating sources for new file types. This framework implements several features common to many sources based on files.
Additionally, module 'avroio' contains a new source, 'AvroSource', that is implemented using the framework described above. 'AvroSource' is a source for reading Avro files.
Adds many unit tests for 'filebasedsource' and 'avroio' modules.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/chamikaramj/incubator-beam filebasedsource
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-beam/pull/507.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #507
----
commit e51d4acf12133a79671c567c9ff709c941c54f8c
Author: Chamikara Jayalath <ch...@apache.org>
Date: 2016-06-21T01:09:50Z
Implements a framework for developing sources for new file types.
Module 'filebasedsource' provides a framework for creating sources for new file types. This framework readily implements several features common to many sources based on files.
Additionally, module 'avroio' contains a new source, 'AvroSource', that is implemented using the framework described above. 'AvroSource' is a source for reading Avro files.
Adds many unit tests for 'filebasedsource' and 'avroio' modules.
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> Add a framework for creating Python-SDK sources for new file types
> ------------------------------------------------------------------
>
> Key: BEAM-360
> URL: https://issues.apache.org/jira/browse/BEAM-360
> Project: Beam
> Issue Type: New Feature
> Components: sdk-py
> Reporter: Chamikara Jayalath
> Assignee: Chamikara Jayalath
>
> We already have a framework for creating new sources for Beam Python SDK - https://github.com/apache/incubator-beam/blob/python-sdk/sdks/python/apache_beam/io/iobase.py#L326
> It would be great if we can add a framework on top of this that encapsulates logic common to sources that are based on files. This framework can include following features that are common to sources based on files.
> (1) glob expansion
> (2) support for new file-systems
> (3) dynamic work rebalancing based on byte offsets
> (4) support for reading compressed files.
> Java SDK has a similar framework and it's available at - https://github.com/apache/incubator-beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/io/FileBasedSource.java
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