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https://issues.apache.org/jira/browse/BEAM-11052?focusedWorklogId=502765&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-502765
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ASF GitHub Bot logged work on BEAM-11052:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 20/Oct/20 16:22
Start Date: 20/Oct/20 16:22
Worklog Time Spent: 10m
Work Description: TheNeuralBit commented on a change in pull request
#13066:
URL: https://github.com/apache/beam/pull/13066#discussion_r508667777
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File path: sdks/python/apache_beam/dataframe/convert.py
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@@ -67,7 +69,28 @@ def to_dataframe(
expressions.PlaceholderExpression(proxy, pcoll))
+# PCollections generated by to_pcollection are memoized.
+# WeakValueDictionary is used so the caches are cleaned up with the parent
+# pipelines
Review comment:
Good idea, added that language
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Issue Time Tracking
-------------------
Worklog Id: (was: 502765)
Time Spent: 1h 40m (was: 1.5h)
> to_pcollection should memoize on DF expressions
> -----------------------------------------------
>
> Key: BEAM-11052
> URL: https://issues.apache.org/jira/browse/BEAM-11052
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-core
> Reporter: Brian Hulette
> Assignee: Brian Hulette
> Priority: P2
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> We should always return the same PCollection when `to_pcollection` is called
> multiple times with the same input, this will allow for better integration
> with interactive notebooks.
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