Issue with Saving Yarn Cache on Self-Hosted Runner

[marouanechoukri31]

Description:
A problem occurred while saving the yarn cache using a self-hosted runner. The process works correctly on the hosted runner.

Error :

Failed to save: Unable to reserve cache with key node-cache-macOS-yarn-33259bc05a9ff84ddf70121c6ada6b7886b9a8e9721b785469c879d852cc411e, another job may be creating this cache. More details: Cache already exists.

Code :

- name: Use Node.js
  uses: actions/setup-node@v4
  with:
     node-version: '20.15.1'
     cache: 'yarn'

Action version:
Version 4

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:

Node version : 20.15.1
Yarn version : 1.22.22

[mahabaleshwars]

Hello @marouanechoukri31,
Thank you for creating this issue. We will investigate it and provide feedback as soon as we have some updates.

[gowridurgad]

Hi @marouanechoukri31, This issue typically occurs in the following scenarios:

Concurrent Jobs: Multiple jobs in the same workflow or different workflows are trying to create or reserve a cache with the same key simultaneously.

Duplicate Cache Key: The cache key being used is not unique enough, causing conflicts when another job has already created a cache with the same key.

To avoid this issue, you can try the following:

1. Ensure Unique Cache Keys: Modify the cache key to include more unique elements, such as a combination of job ID and timestamp. Here is an example of how you can modify the cache key to make it unique. This ensures that each job will have a unique cache key, reducing the likelihood of conflicts.

- name: Create unique cache file
  run: |
    echo "${{ github.run_id }}-${{ matrix.os }}-$(date +%s)" > .cache-key
- uses: actions/setup-node@v4
  with:
    node-version: 20.x
    cache: 'yarn'
    cache-dependency-path: |
      **/yarn.lock
      .cache-key

2. Implement actions/cache: Use the actions/cache action to handle caching directly.

 - name: Cache Yarn dependencies
        id: cache-yarn
        uses: actions/cache@v4
        with:
          path: /Users/runner/Library/Caches/Yarn/v6
          key: yarn-cache-${{ runner.os }}-${{ matrix.os }}-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            yarn-cache-${{ runner.os }}-${{ matrix.os }}-

[gowridurgad]

Hi @marouanechoukri31, Just a gentle reminder regarding this issue, If you have any updates or need further assistance, Please let us know.

[gowridurgad]

Hi @marouanechoukri31, Just a gentle reminder regarding this issue, If you have any updates or need further assistance, Please let us know.