python / python/mypy

Support parallel checking in fine grained mode

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#21,346 0 comments 1 reaction 0 assignees View on GitHub

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feature parallel checking topic-fine-grained-incremental
Dominant language
Python
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20.6k
Forks
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PR merge metrics
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Description

This includes at least two things:

  • Make sure all fine-grained dependencies are written when using --cache-fine-grained on a regular run
  • Speed up the daemon cold start by running it with multiple workers that would write the initial cache

cc @JukkaL

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the handling for --cache-fine-grained during regular runs and the daemon cold-start entry point. Done means regular runs write all fine-grained dependencies and cold starts use multiple workers to populate the initial cache; inspect the relevant existing cache and daemon tests before changing behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
performance, tooling
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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