@azure/storage-blob Memory Leak

[himadrinath]

• Package Name: @azure/storage-blob
• Package Version: 12.8.0
• Operating system: Ubuntu 18.04.3 LTS
• nodejs
  • version: 14.17.6
• browser
  • name/version:
• typescript
  • version:
• Is the bug related to documentation in
  • README.md
  • source code documentation
  • SDK API docs on https://docs.microsoft.com

Describe the bug
BlockBlobClient with uploadFile memory increase when uploading and still holding their after upload finished

To Reproduce
Steps to reproduce the behavior:

              await blockBlobClient.uploadFile(fullPath,
                      {
                        blockSize: 4 * 1024 * 1024, // 4MB block size
                        parallelism: 20, // 20 concurrency
                        metadata: {metadata},
                        blobHTTPHeaders: {
                          blobContentType: "video/mp4",
                          blobCacheControl: "public, max-age=31536000",
                        },
                        abortSignal: AbortController.timeout(8 * 60 * 1000),
                        progress: ev => console.log(ev)
                    }).then(result=>{
                    console.log(result)
                    }).catch(error=>{
                    console.log(error)
                    })

Expected behavior
memory should be release after upload complete
Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
#4964

[EmmaZhu]

Thanks @himadrinath for bringing this to us.

I tried to repro the issue with invoking the method in a long loop, didn't see consistently memory usage increasing. Currently, I'm guessing that this is not a memory leak, it might be caused by GC logic in Node.JS.

I'll do further investigation to see what's in memory, and will update you later.

Thanks
Emma

[EmmaZhu]

Hi @himadrinath ,

Did you see consistently memory usage increasing in the operation?

Thanks
Emma

[himadrinath]

It's resolved it's not because of sdk their is some bug in pm2 cluster mode it's not releasing memory. Thanks