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Support FAQs
Find answers to common questions and troubleshoot issues with Databricks support FAQs. Access helpful resources, tips, and solutions to resolve technical challenges and enhance your Databricks experience.
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Knowledge Base Articles

Sujitha
by Databricks Employee
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Help Center login changes (August 3rd, 2024)

The purpose of this FAQ document is to provide users and partners with answers to common queries or concerns related to the Databricks Help Center Single Sign-On process.  I am a Databricks customer. Does anything change how I access Databricks plat...

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Sujitha
by Databricks Employee
  • 1530 Views
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Databricks Partner Portal SSO (August 3rd, 2024)

The purpose of this FAQ document is to provide users and partners with answers to common queries or concerns related to the Databricks Help Center Single Sign-On process.  I am a Databricks partner. Does anything change how I access Databricks Platf...

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Sujitha
by Databricks Employee
  • 3652 Views
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Databricks Community SSO (August 3rd, 2024)

The purpose of this FAQ document is to provide users and partners with answers to common queries or concerns related to the Databricks Community Single Sign-On process. Why am I being asked to update my primary and recovery email? Primary email: This...

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Adam_Pavlacka
by Databricks Employee
  • 1339 Views
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What is the best way to train a DeepLearning model to ensure we do not encounter out of memory (OOM) errors?

You should use distributed training. By distributing the training workload among GPUs or worker nodes, you can optimize resource utilization and reduce the likelihood of ConnectionException errors and out of memory (OOM) issues. A good option for di...

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Adam_Pavlacka
by Databricks Employee
  • 1465 Views
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What algorithms does AutoML support?

AutoML supports binary/multiple classification, regression, and forecasting models. For more details, please review the How Databricks AutoML works (AWS | Azure | GCP) documentation.

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Adam_Pavlacka
by Databricks Employee
  • 1459 Views
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When deploying and running several jobs at the same time we get the error: REQUEST_LIMIT_EXCEEDED: Your request was rejected since cluster creation, start and upsize requests within your organization have exceeded the rate limit of 100 nodes per minute. Please retry your request later, or choose a larger node type instead.

There is a rate limit of 100 notes per minute. To ensure you do not exceed this limit, you should make adjustments to the deployment and execution of your ML jobs. Distribute recurring workflows evenly over the planned time period To ensure complian...

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Adam_Pavlacka
by Databricks Employee
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My job is failing with a "ModuleNotFoundError: No module named 'tkinter'" error during model training.

To install the tkinter package, you can run the following shell command in a notebook: %sh sudo apt-get install python3-tk. To install the package automatically on every cluster start, you can add the command to a cluster-scoped init script.

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Adam_Pavlacka
by Databricks Employee
  • 1786 Views
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When using mlflow.spark.log_model() I get a "failed to save spark model via mlflowdbfs" error.

The trace indicates a statusCode=401 error caused by com.databricks.mlflowdbfs.MlflowHttpException. You need to disable mlflowdbfs in the environment variable before executing log_model().  Example code:  import osos.environ["DISABLE_MLFLOWDBFS"] = ...

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Adam_Pavlacka
by Databricks Employee
  • 2896 Views
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While executing the regression RECIPE with Jinja2 we get TemplateNotFound errors with recipe_dag_template.html or base.html

The errors occur for resources/recipe_dag_template.html with the inspect() method and for base.html with the remaining methods. To resolve TemplateNotFound errors and ensure successful display of results while executing the regression RECIPE with Ji...

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Adam_Pavlacka
by Databricks Employee
  • 1765 Views
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Unable to load the xgboost model after logging via mlflow. You get a "ModuleNotFoundError: No module named 'ml'" error message.

When using MLflow to log a model, be aware of warnings like the one below: WARNING mlflow.utils.requirements_utils: The following packages were not found in the public PyPI package index as of 2022-12-21; if these packages are not present in the pub...

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Adam_Pavlacka
by Databricks Employee
  • 1665 Views
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While using the model serving API we get a "BAD_REQUEST: Encountered an unexpected error while evaluating the model. Verify that the serialized input Dataframe is compatible with the model for inference” error message.

You should review the following items: Check the request origin: Ensure you're making the request from the intended source. Verify if the request is originating from the expected location. Payload mismatch: Confirm that the payload sent in the POST ...

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Adam_Pavlacka
by Databricks Employee
  • 1903 Views
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When deploying a serverless model, we get "Signal 9" when using small/medium clusters or "Workspace quota exhausted" when using large clusters.

Identifying the root cause of worker termination involves analyzing signals that can provide insights into the issue. Typically, these problems are associated with memory pressure, but understanding the specific events, workload type, and workload s...

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Adam_Pavlacka
by Databricks Employee
  • 2926 Views
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I am running MLflow with a service principal and getting a "RestException: RESOURCE_DOES_NOT_EXIST: Node ID xxxxxxxxxxxx does not exist" error message.

If you view a stack trace and it looks similar to the following:  RestException Traceback (most recent call last)File <command-XXXXXXXXXXXX>:72 mlflow.sklearn.autolog()...File /databricks/python/lib/python3.9/site-packages/mlflow/tracking/fluent.py:...

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Adam_Pavlacka
by Databricks Employee
  • 1427 Views
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When attempting to create a serving endpoint for a custom ONNX model I get a “Container creation failed" error message.

A Container creation failed error message usually means there are missing dependencies. Check the pip requirements to see if there are any missing dependencies. Adding the required dependencies should resolve the error.

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Adam_Pavlacka
by Databricks Employee
  • 1895 Views
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How do I delete rows in the feature store?

Feature store tables are materialized tables that use delta tables underneath. To delete data from the feature store table, you have to run a DELETE command on the rows in the underlying delta table based on the partition column.

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Adam_Pavlacka
by Databricks Employee
  • 1464 Views
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How can I access information offline about existing features in the feature store, like feature engineering logic?

The Databricks feature store provides a catalog that enables data scientists to search for existing features in the offline feature store. The feature store UI offers a searchable interface, allowing you to discover features and view the code used fo...

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Adam_Pavlacka
by Databricks Employee
  • 1558 Views
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How can I resolve CUDA OOM issues while performing batch inference in notebooks using ML models?

The potential root cause could be high GPU utilization while running a live experiment. This can be validated both by using the Spark UI and by using the Nvidia -smi command. If a single GPU is explicitly used, this might cause an overload and hence...

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Adam_Pavlacka
by Databricks Employee
  • 1435 Views
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What is the definition of "scoring" in relation to the default scoring requests limit of 200 QPS? When batching 10 data points to be scored in a single request, is it counted as a single scoring request or as 10?

It is treated as a single request when batching 10 data points. This is because the batching process involves making a single endpoint request to score multiple data points simultaneously.

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