pingcap/tidb

Splitting Test Directories to Increase Test Concurrency and Optimize Cache

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#44,940 opened on Jun 26, 2023

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good first issuetype/enhancement

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Description

Enhancement

we are using Bazel's shard_count to increase test concurrency and speed up our testing process. However, in some cases, we have found that certain directories have too many tests, which can result in slower test execution times, decreased efficiency, and less optimized cache usage.

To address this issue, we need to split the test directories into smaller, more manageable chunks. This will help increase test concurrency, optimize cache usage, and ultimately improve our testing process.

Contributor guide

Research direction
Identify test directories with too many tests and split them into smaller packages to leverage Bazel's shard count effectively.
Tech stack
go
Domain
backend
Issue type
Feature
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
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
Bazel
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60