[BUG] Test error linux cpu with NNI

[miguelgfierro]

Description

E                90         i += 1
E                91     if i == max_retries:
E           ---> 92         raise TimeoutError("check_metrics_written() timed out")
E                93 
E                94 
E           
E           TimeoutError: check_metrics_written() timed out

/data/anaconda/envs/nightly_reco_base/lib/python3.6/site-packages/papermill/execute.py:248: PapermillExecutionError
----------------------------- Captured stdout call -----------------------------
ERROR: There is no experiment running...
INFO: expand searchSpacePath: search_space_svd.json to /tmp/pytest-of-recocat/pytest-1287/tmpo4r2f2p2/search_space_svd.json 
INFO: Starting restful server...
INFO: Successfully started Restful server!
INFO: Setting local config...
INFO: Successfully set local config!
INFO: Starting experiment...
INFO: Successfully started experiment!
-----------------------------------------------------------------------
The experiment id is JZ5GQBjs
The Web UI urls are: http://127.0.0.1:8080   http://172.18.0.4:8080   http://172.17.0.1:8080
-----------------------------------------------------------------------

link to log: https://dev.azure.com/best-practices/recommenders/_build/results?buildId=22252&view=logs&j=513fa82f-6bf5-5d01-2457-cb22781e601b&t=9e260265-5f8c-5335-1126-375960d54d1f

In which platform does it happen?

How do we replicate the issue?

Expected behavior (i.e. solution)

Other Comments