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Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
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Forum Posts

Data_Analytics1
by Contributor III
  • 13006 Views
  • 17 replies
  • 24 kudos

Fatal error: The Python kernel is unresponsive.

I am using MultiThread in this job which creates 8 parallel jobs. It fails for few times in a day and sometimes stuck in any of the Python notebook cell process. Here The Python process exited with an unknown exit code.The last 10 KB of the process's...

  • 13006 Views
  • 17 replies
  • 24 kudos
Latest Reply
luis_herrera
Databricks Employee
  • 24 kudos

Hey, it seems that the issue is related to the driver undergoing a memory bottleneck, which causes it to crash with an out of memory (OOM) condition and gets restarted or becomes unresponsive due to frequent full garbage collection. The reason for th...

  • 24 kudos
16 More Replies
Harsh_Paliwal
by New Contributor
  • 2432 Views
  • 1 replies
  • 0 kudos

java.lang.Exception: Unable to start python kernel for ReplId-79217-e05fc-0a4ce-2, kernel exited with exit code 1.

I am running a parameterized autoloader notebook in a workflow.This notebook is being called 29 times in parallel, and FYI UC is also enabled.I am facing this error:java.lang.Exception: Unable to start python kernel for ReplId-79217-e05fc-0a4ce-2, ke...

image
  • 2432 Views
  • 1 replies
  • 0 kudos
Latest Reply
Anonymous
Not applicable
  • 0 kudos

@Harsh Paliwal​ :The error message suggests that there might be a conflict with the xtables lock.One thing you could try is to add the -w option as suggested by the error message. You can add the following command to the beginning of your notebook t...

  • 0 kudos
kll
by New Contributor III
  • 2714 Views
  • 1 replies
  • 0 kudos

Fatal error: The Python kernel is unresponsive when attempting to query data from AWS Redshift within Jupyter notebook

I am running jupyter notebook on a cluster with configuration: 12.2 LTS (includes Apache Spark 3.3.2, Scala 2.12)Worker type: i3.xlarge 30.5gb memory, 4 coresMin 2 and max 8 workers cursor = conn.cursor()   cursor.execute( """ ...

  • 2714 Views
  • 1 replies
  • 0 kudos
Latest Reply
Debayan
Databricks Employee
  • 0 kudos

Hi, Could you please confirm the usage of your cluster while running this job? you can monitor the performance here: https://docs.databricks.com/clusters/clusters-manage.html#monitor-performance with different metrics. Also, please tag @Debayan​ with...

  • 0 kudos
dhanu
by New Contributor
  • 1465 Views
  • 2 replies
  • 0 kudos

Fatal error: Python kernel is unresponsive

i have submitted around 90 job at a time to databricks, the job was running continuously for 2 hours after that i am getting fatal error Pyhon kernel is unresponsive.I am using Databricks runtime version : 11.2Cluster Configuration Details are given...

  • 1465 Views
  • 2 replies
  • 0 kudos
Latest Reply
jose_gonzalez
Databricks Employee
  • 0 kudos

Hi @Dhanaraj Jogihalli​,Just a friendly follow-up. Did any of the responses help you to resolve your question? if it did, please mark it as best. Otherwise, please let us know if you still need help.

  • 0 kudos
1 More Replies
Valon98
by New Contributor III
  • 12642 Views
  • 8 replies
  • 4 kudos

Resolved! During execution of a cell "RuntimeException: The python kernel is unresponsive."

Hi all, I am running a preprocessing to create my trainset and test set. Does anyone know why during the execution my cell gives the error "RuntimeException: The python kernel is unresponsive." ? How can I solve it?

  • 12642 Views
  • 8 replies
  • 4 kudos
Latest Reply
Anonymous
Not applicable
  • 4 kudos

Hey there @Valerio Goretti​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from...

  • 4 kudos
7 More Replies
Orianh
by Valued Contributor II
  • 29367 Views
  • 25 replies
  • 35 kudos

Fatal error: Python kernel is unresponsive

Hey guys, I'm using petastorm to train DNN, First i convert spark df with make_spark_convertor and then open a reader on the materialized dataset.While i start training session only on subset of the data every thing works fine but when I'm using all...

  • 29367 Views
  • 25 replies
  • 35 kudos
Latest Reply
Anonymous
Not applicable
  • 35 kudos

Same error. This started a few days ago on notebooks that used to run fine in the past. Now, I cannot finish a notebook.I have already disabled almost all output being streamed to the result buffer, but the problem persists. I am left with <50 lines ...

  • 35 kudos
24 More Replies
SusuTheSeeker
by New Contributor III
  • 3991 Views
  • 7 replies
  • 3 kudos

Kernel switches to unknown using pyspark

I am working in jupyter hub in a notebook. I am using pyspark dataframe for analyzing text. More precisely I am doing sentimment analysis of newspaper articles. The code works until I get to some point where the kernel is busy and after approximately...

  • 3991 Views
  • 7 replies
  • 3 kudos
Latest Reply
-werners-
Esteemed Contributor III
  • 3 kudos

do you actually run the code on a distributed environment (meaning a driver and multiple workers)?If not, there is no use in using pyspark as all code will be executed locally.

  • 3 kudos
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