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Machine Learning
Dive into the world of machine learning on the Databricks platform. Explore discussions on algorithms, model training, deployment, and more. Connect with ML enthusiasts and experts.
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Forum Posts

Akash_Wadhankar
by New Contributor III
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Learn Databricks AI medium article series for fellow learners.

When it comes to machine learning, the platform plays a pivotal role in successful implementation. Databricks offers a best-in-class machine learning platform with cutting-edge features such as MLflow, Model Registry, Feature Store, and MLOps, which ...

Machine Learning
DatabricksML MachineLearning AI FeatureStore DecisionScience
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zed
by New Contributor III
  • 763 Views
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Consequences of Not Using write_table with Feature Engineering Client and INSERT OVERWRITE

Hello Databricks Community,I am currently using the Feature Engineering client and have a few questions about best practices for writing to Feature Store Tables.I would like to know more about not using the write_table method directly from the featur...

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Brahmareddy
Honored Contributor
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Hi @zed,How are you doing? As per my understanding, Consider using the write_table method from the Feature Engineering client to ensure that all Feature Store functionality is properly leveraged, such as cataloging, lineage tracking, and handling upd...

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Kjetil
by New Contributor III
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FeatureEngineeringClient and Unity Catalog

When testing this code  ( fe.score_batch( df=dataset.drop("Target").limit(10), model_uri=f"models:/{model_name}/{mv.version}", ) .select("prediction") .limit(10) .display() )  I get the error: â€œMlflowException: The...

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Kjetil
by New Contributor III
  • 528 Views
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Feature Store - lookback_window does not work with primary keys of "date" type

I just discovered what I believe is a bug in Feature Store. The expected value (of the "value" column) is 'NULL' but the actual value is "a". If I instead change the format to timestamp of the "date" column (i.e. removes the .date() in the generation...

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Kjetil
New Contributor III
  • 1 kudos

Thank you for answering. Yes, that is also what I figured out. In other words the lookback_window argument only works when using timestamp format for the primary key. I cannot see that this behavior is described in the documentation.

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NaeemS
by New Contributor III
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Feature Store Model Serving endpoint

Hi,I am trying to deploy my model which was logged by featureStoreEngineering client as a serving endpoint in Databricks. But I am facing following error:   The Databricks Lookup client from databricks-feature-lookup and Databricks Feature Store clie...

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robbe
New Contributor III
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Hi @damselfly20 unfortunately I can't help much with that as I've never worked with RAGs. Are you sure it's the same error though? @NaeemS's and my errors seems to be Java related and yours MLflow related.

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Kaizen
by Valued Contributor
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Model Serving Latency Chart

Hi, For the model serving latency graph what is p50 and p99? I only have one model i am serving on this endpoing so im surprised to see two models being tracked  

Kaizen_0-1714504038212.png
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Kaizen
Valued Contributor
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If im not mistaken this refers to 50% of responses and 99% responses and averages accordingly for the metrics? @s_park @Sujitha @Debayan 

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tanjil
by New Contributor III
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Import mlflow Error

Hello, I am trying to replicate this motebook in my environment: mlflow-end-to-end-example - Databricks However, I am getting the following error when I run "import mlflow": "TypeError: bases must be types"How can I solve this issue? Thank you, Tanji...

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Kumaran
Databricks Employee
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Hello @tanjil    Thank you for contacting databricks community support. Could you check what version of protobuf you have? If you are using 10.4 ML cluster, the MLflow 1.x is not compatible with protobuf 4.x. The default version of protobuf in MLR 10...

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yorabhir
by New Contributor III
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'error_code': 'INVALID_PARAMETER_VALUE', 'message': 'Too many sources. It cannot be more than 100'

I am getting the following error while saving a delta table in the feature storeWARNING databricks.feature_store._catalog_client_helper: Failed to record data sources in the catalog. Exception: {'error_code': 'INVALID_PARAMETER_VALUE', 'message': 'To...

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AdamIH123
by New Contributor
  • 2136 Views
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Feature Store Log Model and Score Batch - env_manager

Hi Everyone. I have a couple of questions about the feature store log model and score batch. After you log a model with the feature store then use fs.score_batch is it possible to pass the env_manager to predict with the same env as training as descr...

fs_score_batch.png
Machine Learning
feature_store
log_model
score_batch
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MohsenJ
Contributor
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I also like to know if that works. 

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MohsenJ
by Contributor
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  • 2 replies
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Model Lineage with Feature Engineering is missing tables and notebooks

I am trying to track the lineage of model and tables using the FeatureEngineeringClient. The table lineage shows the relevant tables and notebooks but the model lineage shows only the model. No notebook and tables. here is my code  fe = FeatureEngine...

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Latest Reply
MohsenJ
Contributor
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ok I realized something else. That although I used FeatureEngineeringCient, MLflow model artifact suggest I used FeatureStoreClient. Please see attachment.   

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NaeemS
by New Contributor III
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Handling Null Values in Feature Stores

Hi, I am using multiple feature stores in my workflow using feature lookups. In my logged pipeline, I have several stages, including Assembler, Standard Scaler, Indexer and then Model. However, I am facing an issue during inference using the `score b...

Machine Learning
Feature Store
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jonathan-dufaul
by Valued Contributor
  • 3900 Views
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Does FeatureStoreClient().score_batch support multidimentional predictions?

I have a pyfunc model that I can use to get predictions. It takes time series data with context information at each date, and produces a string of predictions. For example:The data is set up like below (temp/pressure/output are different than my inpu...

  • 3900 Views
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Latest Reply
EmilAndersson
New Contributor II
  • 5 kudos

I have the same question. I've decided to look for alternative Feature Stores as this makes it very difficult to use for time series forecasting.

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Northp
by New Contributor II
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  • 2 replies
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Resolved! Differences between Feature Store and Unity Catalog

Our small team has just finished the data preparation phase of our project and started data analysis in Databricks. As we go deeper into this field, we're trying to understand the distinctions and appropriate uses for a Feature Store versus a Unity C...

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Latest Reply
Vinay_M_R
Databricks Employee
  • 2 kudos

Hi @Northp  Good day!1.)  A Feature Store is a centralized repository that enables data scientists to find and share features, ensuring that the same code used to compute the feature values is used for model training and inference. It is particularly...

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Direo
by Contributor
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Feature store feature table location

Can Databricks feature tables be stored outside of DBFS?

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the-sab
New Contributor II
  • 2 kudos

Yes, Databricks feature tables can be stored outside of Databricks File System (DBFS). You can store your feature tables in external storage systems such as Amazon S3, Azure Blob Storage, Azure Data Lake Storage, or Hadoop Distributed File System (HD...

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animadurkar
by New Contributor III
  • 5700 Views
  • 2 replies
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Resolved! Invalid catalog and schema for table name error when creating a Feature Store

I've created a dataset that I want to create a feature store table for. I created a database in my dev unity catalog to store the feature tables, but each time I try to create the table I get this error:ValueError: Invalid catalog 'dev' or schema 'fe...

  • 5700 Views
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Latest Reply
Oogh5zai1
New Contributor II
  • 2 kudos

Hello,The error message suggests that there might be an issue with the catalog or schema name you are using when trying to create the feature store table. Here are a few tips to help you troubleshoot this problem:Verify the catalog and schema names: ...

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