am: 260bfd5af1
* commit '260bfd5af1907059753bb3f8fbf5e32a8131ef46':
Ensure to complete background thread of PipeManager.
am: 260bfd5af1
* commit '260bfd5af1907059753bb3f8fbf5e32a8131ef46':
Ensure to complete background thread of PipeManager.