[
https://issues.apache.org/jira/browse/BEAM-10781?focusedWorklogId=473179&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-473179
]
ASF GitHub Bot logged work on BEAM-10781:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 21/Aug/20 03:08
Start Date: 21/Aug/20 03:08
Worklog Time Spent: 10m
Work Description: yifanmai opened a new pull request #12656:
URL: https://github.com/apache/beam/pull/12656
`PTransformOverride.get_replacement_transform_for_applied_ptransform()` is a
new method that replaces `PTransformOverride.get_replacement_transform()`. This
new method provides access to the `AppliedPTransform` when constructing the
replacement transform, whereas the old method only provides access to the
`PTransform`.
- Introduces
`PTransformOverride.get_replacement_transform_for_applied_ptransform(self,
applied_ptransform)`. The user can override this to provide a replacement
`PTransform` using the input `AppliedPTransform`.
- Provides a default implementation of this method that calls
`PTransformOverride.get_replacement_transform()` for backwards compatibility.
- Deprecates `PTransformOverride.get_replacement_transform()`.
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 473179)
Remaining Estimate: 0h
Time Spent: 10m
> Allow PTransformOverride to use AppliedPTransform when constructing
> replacement transform
> -----------------------------------------------------------------------------------------
>
> Key: BEAM-10781
> URL: https://issues.apache.org/jira/browse/BEAM-10781
> Project: Beam
> Issue Type: New Feature
> Components: sdk-py-core
> Reporter: Yifan Mai
> Assignee: Yifan Mai
> Priority: P2
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In the Python SDK, {{PTransformOverride.get_replacement_transform}} takes in
> a
> [{{PTransform}}|https://github.com/apache/beam/blob/cfa448d121297398312d09c531258a72b413488b/sdks/python/apache_beam/pipeline.py#L1321]
> rather than an {{AppliedPTransform}}. This is inconvenient because the
> {{PTransformOverride}} may want to inspect the properties of the
> {{AppliedPTransform}} when constructing the replacement {{PTransform}}. This
> is already [allowed in
> Java|https://github.com/apache/beam/blob/cfa448d121297398312d09c531258a72b413488b/sdks/java/core/src/main/java/org/apache/beam/sdk/runners/PTransformOverrideFactory.java#L49].
> The proposal to do this in a backward compatible way is as follows:
> * Introduce
> {{PTransformOverride.get_replacement_transform_for_applied_ptransform(self,
> applied_ptransform}} and call it instead of
> {{PTransformOverride.get_replacement_transform}}. The user can override this
> to provide a replacement {{PTransform}} using the input {{AppliedPTransform}}.
> * Provide a default implementation of
> {{PTransformOverride.get_replacement_transform_for_applied_ptransform()}}
> that calls {{PTransformOverride.get_replacement_transform()}} for backwards
> compatibility
> * Deprecate {{PTransformOverride.get_replacement_transform()}}
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