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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

User16765131552
by Databricks Employee
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Resolved! Setup a model serving REST endpoint?

I am trying to set up a demo with a really simple spark ML model and i see this error repeated over and over in the logs in the serving UI:/databricks/chauffeur/model-runner/lib/python3.6/site-packages/urllib3/connectionpool.py:1020: InsecureRequestW...

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User16765131552
Databricks Employee
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Not sure how the containers for each model version work on the endpoints, but looks like Model serving endpoints use a 7.x runtime. So those would be Spark 3.0, not Spark 3.1

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User16826994223
by Databricks Employee
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Using l vacuum with a dry run in Python for a Delta Lake

I can see an example on how to call the vacuum function for a Delta lake in python here. how to use the same in python %sql VACUUM delta.`dbfs:/mnt/<myfolder>` DRY RUN

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User16826994223
Databricks Employee
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The dry run for non-SQL code is not yet available in Delta version 0.8. I see there is a bug that is opened with delta opensource in git . hope it get resolved soon

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User16826992666
by Databricks Employee
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MLflow not logging metrics

I have run a few MLflow experiments and I can see them in the experiment history, but none of the metrics have been logged along with them. I thought this was supposed to be automatically included. Any idea why they wouldn't be showing up?

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User16826994223
by Databricks Employee
  • 2571 Views
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Resolved! where Can I find the the logs of spark job runs in Azure storage

Hi Want to find the storage bucket where all my runs' logs are stored , I want to do analytics on logs , can you please help me knowing which bucket or path I should look for

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User16826994223
Databricks Employee
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The root bucket where are not directly accessible outside databricks so you need to read the logs from databricks notebook only

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User16826994223
by Databricks Employee
  • 3468 Views
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Resolved! Exception: Run with UUID l567845ae5a7cf04a40902ae789076093c is already active.

I'm trying to create a new experiment on mlflow but I have this problem:Exception: Run with UUID l142ae5a7cf04a40902ae9ed7326093c is already active. snippet mlflow.set_experiment("New experiment 2")     mlflow.set_tracking_uri('http://mlflow:5000')  ...

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User16826994223
Databricks Employee
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You have to run mlflow.end_run() to finish the first experiment. Then you can create another

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User16826994223
by Databricks Employee
  • 1601 Views
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What is the preview feature for Auto ML

What is the preview feature for Auto ML

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User16826994223
Databricks Employee
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A - AutoML public preview featuresThe Databricks AutoML Public Preview parallelizes training over sklearn and xgboost models for classification (binary and multiclass) and regression problems. We support datasets with numerical, categorical and times...

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brickster_2018
by Databricks Employee
  • 2994 Views
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  • 2994 Views
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brickster_2018
Databricks Employee
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The impact will be only on the files touched by the MERGE operation. The newly created files will not be optimized and data co-locality is not ensured. However, the files which are not touched by the MERGE operation will continue to show the improvem...

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User16789201666
by Databricks Employee
  • 1621 Views
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What's a best practice for Hyperopt workflow?

Choose what hyperparameters are reasonable to optimizeDefine broad ranges for each of the hyperparameters (including the default where applicable)Run a small number of trialsObserve the results in an MLflow parallel coordinate plot and select the run...

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User16789201666
by Databricks Employee
  • 5951 Views
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When to use uniform vs log-uniform in Hyperopt?

Hyperopt offers hp.uniform and hp.loguniform, both of which produce real values in a min/max range. hp.loguniform is more suitable when one might choose a geometric series of values to try (0.001, 0.01, 0.1) rather than arithmetic (0.1, 0.2, 0.3). Wh...

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User16826994223
by Databricks Employee
  • 3737 Views
  • 1 replies
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Which file size is better 1 GB file size in target or 128 MB or lesser than that

Which file size is better 1 GB file size in target or 128 MB or lesser than that , I am interested in knowing concept too.

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sajith_appukutt
Databricks Employee
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If data is getting appended primarily to the delta table and read ratio is higher than writes ratio - larger file sizes ( 1GB) would be ideal. However, if your delta table undergoes frequent upserts/merges, having smaller files than the default 1GB ...

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