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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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SakuraDev1
by • New Contributor II
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autoloader cache and buffer utilization error

Hey guys,I'm encountering an issue with a project that uses Auto Loader for data ingestion. The production cluster is shutting down due to the error: The Driver restarted - possibly due to an OutOfMemoryError - and this stream has been stopped.I’ve i...

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VZLA
Databricks Employee
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The error message is sometimes generic "possibly due to an OutOfMemoryError" There is memory pressure indeed, but try to correlate those graph metrics with the Driver's STDOUT file content and check if the GC/FullGCs are able to work properly and rec...

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SakuraDev1
by • New Contributor II
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SakuraDev1 / Board: data-engineering (39000)

Link to post: (autoloader cache and buffer utilization error)by SakuraDev1 https://community.databricks.com/t5/data-engineering/autoloader-cache-and-buffer-utilization-error/m-p/94927#M39000 Hey guys, I'm encountering an issue with a project that use...

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VZLA
Databricks Employee
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To address the resource scheduling and code-specific optimizations for your Auto Loader data ingestion pipeline, consider the following suggestions: Resource Scheduling Dynamic Allocation: Enable dynamic allocation in your cluster configuration. Thi...

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pesky_chris
by • New Contributor III
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Resolved! Support of Dashboards in Databricks Asset Bundles

Hello Databricks & Fellow Users,I noticed that support for Dashboards in DABs is coming soon (per the recent Databricks CLI pull request). Does anyone know if there are additional features planned to enhance the dashboard lifecycle? Currently, Git Fo...

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Walter_C
Databricks Employee
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I can see that the usage of Git/Repos in Lakeview Dashboards is already in development, there is no ETA yet of when this will be GA but we can guarantee it is in progress  

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cool_cool_cool
by • New Contributor II
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Databricks Workflow is stuck on the first task and doesnt do anyworkload

Heya I have a workflow in databricks with 2 tasks. They are configured to run on the same job cluster, and the second task depends on the first.I have a weird behavior that happened twice now - the job takes a long time (it usually finishes within 30...

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VZLA
Databricks Employee
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Given the provided context, the suggestion is to capture thread dumps from both the Spark Driver and any Active Executor when the task seems to be hung. Ideally, you should also be able to find in the Spark logs for the active executor with the hung ...

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Dave_Nithio
by • Contributor II
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Production vs Development DLT Schema

My organization is currently ingesting data utilizing a Delta Live Table pipeline. This pipeline points to a production Storage location and Target schema. This means that whenever we make changes to this pipeline, it directly impacts the production ...

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VZLA
Databricks Employee
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To test changes to your Delta Live Table (DLT) pipeline without impacting production data, you can point to a different storage location and target schema. This does not require creating a completely separate DLT pipeline. Here are the steps: Create...

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adhi_databricks
by • New Contributor III
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DATABRICKS CLEANROOMS

Hi Team,I have a few questions regarding Databricks Cleanrooms:For onboarding first-party data, does the collaborator need a Databricks account with an enabled UC workspace?How is it useful for activating data for retargeting or prospecting use cases...

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VZLA
Databricks Employee
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For onboarding first-party data, the collaborator does need a Databricks account with an enabled Unity Catalog (UC) workspace. This is necessary to map system tables into its metastore and to observe non-UC governed assets. Activating data for retarg...

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sanket-kelkar
by • New Contributor II
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Auto OPTIMIZE causing a data discrepancy

I have a delta table in Azure Databricks that gets MERGEd every 10 minutes.In the attached screenshot, in the version history of this table, I see a MERGE operation every 10 minutes which is expected. Along with that, I see the OPTIMIZE operation aft...

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VZLA
Databricks Employee
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Can you please provide more context about this, specifically with respect to the DBR Release and reproducibility of this scenario? Any metrics or plan change differences between both select statements, while the Optimize was in progress and after? Th...

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AcrobaticMonkey
by • New Contributor II
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Cannot Get Query Results in SQL Alerts

Example Query:select name, date from errors;Now i want to trigger an alert if count is greater than 1, and a notification should be sent to slack with output rows (name and date values). Even if i use {{QUERY_RESULT_ROWS}}, it only gives value after ...

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VZLA
Databricks Employee
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Note I have not tried this myself, but can you try the following and let me know if it helps: Create the query, so SELECT name, date FROM errors;Set up the alert. Set the condition to trigger the alert when the count of rows is greater than 1.Create ...

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jonathanjone
by • New Contributor
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Facing Some Issues with Tablet PC and Databricks Product – Any Advice?

Hello everyone,I’m having some trouble using Databricks SQL Analytics v2.1 on my tablet PC, and I was wondering if anyone here has had similar experiences or could offer some advice.The main issues I’m facing are:Performance Slowdowns: When I run com...

Data Engineering
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NandiniN
Databricks Employee
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Hi @jonathanjone , 1 - Performance Slowdowns could be because of the warehouse size and the query count, if there are many queries, the warehouse has a limit of 10 query in parallel, else you see the query being queued.  You could also check if the q...

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guangyi
by • Contributor III
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Resolved! Has the numUpdateRetryAttempts property been deprecated?

I noticed there is a numUpdateRetryAttempts property mentioned in the the document https://learn.microsoft.com/en-us/azure/databricks/delta-live-tables/properties  used for configing the retry times of any DLT pipeline, but I cannot find it in the DL...

Data Engineering
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VZLA
Databricks Employee
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According to the Delta Live Tables properties reference, pipelines.numUpdateRetryAttempts is a recognized configuration parameter. It specifies the maximum number of attempts to retry an update before failing the update when a retryable failure occur...

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Viswanth
by • New Contributor II
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Implementing Conditional Logic for Dependent Tasks Using SQL Output and Task Values

Hi team,I'm working on setting up a workflow with task dependencies where a subsequent task should execute conditionally, based on the result of a preceding SQL task. Specifically, I need to evaluate an if/else condition on the output of the SQL quer...

Data Engineering
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Ramana
Contributor
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This feature is in the Private Preview.

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dbr_data_engg
by • New Contributor II
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Unable to deploy Databricks Asset Bundle

Hi Team,I created a workflow/job and was able to deploy to Dev and Prod workspaces. But now I am unable to deploy job to "Dev" workspace and getting below error, [Also unable to see this job on Databricks UI]Deploying resources...Updating deployment ...

Data Engineering
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fabiobeider
New Contributor II
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Hey, I'm facing the same issueDid you ever get a chance to solve it?

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emiliec
by • New Contributor
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QGIS python command in Databricks notebook

Hello, I would like to run a qgis python script in a databricks notebook. Currently, databricks doesn't recognize the qgis package. For example, i'd like to run this small example : from qgis.core import *# Supply path to qgis install locationQgsAppl...

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VZLA
Databricks Employee
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QGIS is not directly usable in Scala or Spark environments as it is a standalone Geographic Information System (GIS) application, installing and using it directly within Databricks may not be straightforward due to the specific environment and depend...

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mdsultan
by • New Contributor II
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MetaStore Issues

Hi,I am using Student Account in Azure and created databricks workspace. I am trying to locate Manage Account to create MetaStore but I am not successful. Would need your help.no Manage Account option available.If you see I am an Admin,  Thanks for a...

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NandiniN
Databricks Employee
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Databricks student account, may have certain limitations compared to a full Azure Databricks account. For student accounts, you might not have the necessary permissions to create a Unity Catalog metastore. Typically, creating and managing a metastore...

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maikelos272
by • New Contributor II
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Cannot create storage credential without Contributor role

Hello,I am trying to create a Storage Credential. I have created the access connector and gave the managed identity "Storage Blob Data Owner" permissions. However when I want to create a storage credential I get the following error:Creating a storage...

Data Engineering
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subhash_1692
New Contributor II
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Did someone find a solution?{ "error_code": "RESOURCE_DOES_NOT_EXIST", "message": "Refresh token not found for userId: Some(2302042022180399)", "details": [ { "@type": "type.googleapis.com/google.rpc.RequestInfo", "request_id": "d731471b-b...

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