apache/beam

Python DirectRunner _PubSubReadEvaluator creates new client per bundle

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#19,712 opened on Jun 4, 2022

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Description

Lots of credential fetches. Similar to https://issues.apache.org/jira/browse/BEAM-2264 but in this case the DirectRunner implementation seems to be creating a new client for each bundle: https://github.com/apache/beam/blob/d5d7a7b7d0408d8435031e7bfce1abe2227115f5/sdks/python/apache_beam/runners/direct/transform_evaluator.py#L474

From: https://stackoverflow.com/questions/57010426/dataflow-access-to-pubsub-access-tokens

Imported from Jira BEAM-7763. Original Jira may contain additional context. Reported by: udim.

Contributor guide

Research direction
Investigate how to cache or reuse the PubSub client across bundles in DirectRunner's PubSubReadEvaluator.
Tech stack
python
Domain
backenddata
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
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Fresh
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Clear
Prerequisites
GitPython
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75