Timed out waiting to get a heartbeat from kernel process

Environment data

• VS Code version: 1.51.1
• Extension version (available under the Extensions sidebar): XXX
• Jupyter Extension version (available under the Extensions sidebar): v2020.11.358541065
• OS (Windows | Mac | Linux distro) and version: Linux x64 4.19.0-11-amd64
• Python and/or Anaconda version: Python V==3.7, Anaconda V==2020.07
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): conda
• Jupyter server running: Local

Expected behaviour

Run selected cells and provide relevant output

Actual behaviour

The vs code doesn’t provide any output to for the running cell in .ipynb

XXX

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

1. Clicking on ipynb file loads the jupyter extension, Which in turn calls the jupyter notebook extension. This sometimes gives an error stating ‘Timed out waiting to get a heartbeat from kernel process’

But for reference, the following code was constituted in the ipynb file:-

import tensorflow as tf
import numpy
import matplotlib.pyplot as plt

def preprocess(dataset):
    import pandas as pd
    import numpy as np
    from sklearn.model_selection import train_test_split

    print('[INFO] cleaning dataset')
    df = pd.read_csv(dataset)
    df.drop(['user_id','account_id'],axis = 1)
    df.replace([np.inf, -np.inf], np.nan, inplace=True)
    df.fillna(df.mean(), inplace=True)

    print('[INFO] train test split')

    #importing train test split
    X = df.drop(['target'],axis = 1)
    y = df['target']
    X_train, x_test, Y_train, y_test = train_test_split(X, y, test_size=0.25, random_state=123)
    return(X_train, x_test, Y_train, y_test)


X_train, x_test, Y_train, y_test = preprocess(r'taskdata.csv')

Logs

/media/nik/Media/Conda/envs/TFDS/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py -c “import notebook” /media/nik/Media/Conda/envs/TFDS/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py -c “import jupyter” /media/nik/Media/Conda/envs/clipper/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py -c “import ipykernel” /media/nik/Media/Conda/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py -c “import ipykernel” /media/nik/Media/Conda/envs/TFDS/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py jupyter kernelspec --version /media/nik/Media/Conda/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py -c “import ipykernel” /media/nik/Media/Conda/envs/TFDS/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v /media/nik/Media/Conda/envs/TFDS/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v /media/nik/Media/Conda/envs/TFDS/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.jupyter_daemon -v /media/nik/Media/Conda/envs/clipper/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v /media/nik/Media/Conda/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v /media/nik/Media/Conda/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v Error 2020-11-19 22:47:07: Kernel died [r [Error]: Traceback (most recent call last):

at t._next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:762779)
at t.__tryOrUnsub (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:5463)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:4632)
at t._next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:3736)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:3407)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:8976)
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:9:108204
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:428264
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:428482
at Immediate._onImmediate (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:430047)
at processImmediate (internal/timers.js:439:21)] 

Error 2020-11-19 22:47:07: Kernel died [r [Error]: Traceback (most recent call last):

at t._next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:762779)
at t.__tryOrUnsub (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:5463)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:4632)
at t._next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:3736)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:3407)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:8976)
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:9:108204
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:428264
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:428482
at Immediate._onImmediate (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:430047)
at processImmediate (internal/timers.js:439:21)] 

Error 2020-11-19 22:47:36: Timed out waiting to get a heartbeat from kernel process. Error 2020-11-19 22:47:36: Failed to connect raw kernel session: Error: Timed out waiting to get a heartbeat from kernel process. Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: DataScience Error [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Timed out waiting to get a heartbeat from kernel process. Error 2020-11-19 22:47:36: Failed to connect raw kernel session: Error: Timed out waiting to get a heartbeat from kernel process. Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: Failed to determine if a notebook is active for the current editor [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:47:36: DataScience Error [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)]

/media/nik/Media/Conda/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py -c “import ipykernel” /media/nik/Media/Conda/bin/python ~/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/pythonFiles/pyvsc-run-isolated.py vscode_datascience_helpers.daemon --daemon-module=vscode_datascience_helpers.kernel_launcher_daemon -v Error 2020-11-19 22:48:12: Kernel died [r [Error]: Traceback (most recent call last):

at t._next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:762779)
at t.__tryOrUnsub (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:5463)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:4632)
at t._next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:3736)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:3407)
at t.next (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:32:8976)
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:9:108204
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:428264
at /home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:428482
at Immediate._onImmediate (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:47:430047)
at processImmediate (internal/timers.js:439:21)] 

Error 2020-11-19 22:48:41: Timed out waiting to get a heartbeat from kernel process. Error 2020-11-19 22:48:41: Failed to connect raw kernel session: Error: Timed out waiting to get a heartbeat from kernel process. Error 2020-11-19 22:48:41: Exception attempting to start notebook: [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:48:41: DataScience Error [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:48:41: DataScience Error [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)] Error 2020-11-19 22:48:41: DataScience Error [Error: Timed out waiting to get a heartbeat from kernel process. at m.waitForHeartbeat (/home/nik/.vscode/extensions/ms-toolsai.jupyter-2020.11.358541065/out/client/extension.js:49:646443)]

The code never returned any output

[DonJayamanne]

Looks like ipykernel is not installed properly on your environment. Please could you try installing ipykernel into your environment manually.

[Nikhil1O1]

wait, Is this happening because ipykerel is missing in my current venv??