[BEAM-553] Add a custom text source

• Type: New Feature
• Status: Resolved
• Priority: P2
• Resolution: Fixed
• Fix Version/s: Not applicable
• Component/s: sdk-py-core
• Assignee: Chamikara Madhusanka Jayalath
• Reporter: Chamikara Madhusanka Jayalath
• Created: 15/Aug/16 19:16
• Updated: 16/May/20 13:54
• Resolved: 09/Jan/17 19:22

Description

Currently, the text source implementation available for Python SDK [1] is a Dataflow native source which only works efficiently for Dataflow runner. We should add a custom text source on top of custom file-based source framework [2] so that other runner implementations can potentially use the same text source implementation.

Custom text source implementation for Java SDK is at [3].

[1] https://github.com/apache/incubator-beam/blob/python-sdk/sdks/python/apache_beam/io/fileio.py#L70
[2] https://github.com/apache/incubator-beam/blob/python-sdk/sdks/python/apache_beam/io/filebasedsource.py
[3] https://github.com/apache/incubator-beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/io/TextIO.java#L745

Issue Links

• links to: GitHub Pull Request #920