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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

Ram-Dev7
by New Contributor
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Query on using secret scope for dbt-core integration with databricks workflow

Hello all,I am currently configuring dbt-core with Azure Databricks Workflow and using Azure Databricks M2M (Machine-to-Machine) authentication for this setup. I have the cluster ID and cluster secret ID stored in Databricks secret scope.I am seeking...

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RishabhTiwari07
Community Manager
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Hi @Ram-Dev7 , Thank you for reaching out to our community! We're here to help you. To ensure we provide you with the best support, could you please take a moment to review the response and choose the one that best answers your question? Your feedbac...

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mbaas
by New Contributor III
  • 2376 Views
  • 1 replies
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DLT Serverless costs

I recently started checking out the serverless delta live tables. In my understanding serverless continuous jobs (with autoloader) would only do something when new files arrive. However for serverless 4 pipelines running continuously, I spend in two ...

  • 2376 Views
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NandiniN
Databricks Employee
  • 2 kudos

Hi @mbaas , That does not sound right. So, were you able to compare the jobs, stages and spot the difference. Are there more tasks added, or with compute perspective you do not find a difference at all but only the cost?  Also, it may be required to ...

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rumfox
by New Contributor II
  • 4604 Views
  • 2 replies
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Maximum Number of Parameters in Databricks SQL Queries

Hello Databricks Community,I'm working with Databricks SQL and encountered an issue when passing a large number of parameters in a query. Specifically, I attempted to pass 493 parameters, but I received the following error message:BAD_REQUEST : Too m...

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szymon_dybczak
Esteemed Contributor III
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Hi @rumfox ,I would assume there is such a limit, the error is pretty clear. But the weird thing is, I cannot find any mention in documentation about it 

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dadrake3
by New Contributor II
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Delta Live Tables Unity Catalog Insufficient Permissions

I am receiving the following error when I try to run my DLT pipeline with unity catalog enabled.```raise Py4JJavaError( py4j.protocol.Py4JJavaError: An error occurred while calling o950.load. : org.apache.spark.SparkSecurityException: [INSUFFICIENT_P...

  • 1306 Views
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dadrake3
New Contributor II
  • 1 kudos

I have also tried granting all permissions on the schema to myself and to all users and neither helped

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mdelvaux
by New Contributor
  • 852 Views
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BigQuery as foreign catalog - full object structs

Hi -We have mounted BigQuery, hosting Google Analytics data, as a foreign catalog.When querying the tables, objects are returned as strings, with all keys obfuscated by "f" or "v", likely to avoid replicating object keys across all records and hence ...

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Neli
by New Contributor III
  • 2028 Views
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Decrease frequency of Databricks Asset Bundle API

We are using DABs for our deployment and to invoke any workflow. Behinds the scenes, it calls below API to get the status of workflow. Currently, it checks every few seconds. Is there a way to decrease this frequency from seconds to minutes.  GET /ap...

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Latest Reply
Frank_Kennedy
New Contributor II
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Hey!  If the API is checking the job status too frequently, you might want to consider implementing a custom polling mechanism. Instead of relying on the default frequency, you can build a simple script or function that pauses for a longer interval b...

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thiagoawstest
by Contributor
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Error Sent message larger than max

Hello, I'm receiving a large amount of data in a dataframe, when trying to record or display it, I receive the error below. How can I fix it, or where do I change the setting?SparkConnectGrpcException: <_MultiThreadedRendezvous of RPC that terminated...

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fghedin
Databricks Partner
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Hi @Retired_mod, I'm facing the same error. Can you provide the full name of the spark conf we have to change?Thank you

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costi9992
by Databricks Partner
  • 4900 Views
  • 3 replies
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Access Databricks API using IDP token

Hello,We have a databricks account & workspace, provided by AWS with SSO enabled. Is there any way to access databricks workspace API ( jobs/clusters, etc ) using a token retrieved from IdentityProvider ? We can access databricks workspace API with A...

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Latest Reply
fpopa
New Contributor II
  • 2 kudos

Hey - Costin and Anonymous user, have you managed to get this working, do you have examples by any chance?I'm also trying something similar but I haven't been able to make it work.> authenticate and access the Databricks REST API by setting the Autho...

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csmcpherson
by Databricks Partner
  • 2764 Views
  • 2 replies
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AWS NAT (Network Address Translation) Automated On-demand Destruct / Create

Hi folks, Our company typically uses Databrick during a 12 hour block, however the AWS NAT for elastic compute is up 24 hours, and I'd rather not pay for those hours.I gather AWS lambda and cloudwatch can be used to schedule / trigger NAT destruction...

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csmcpherson
Databricks Partner
  • 0 kudos

For interest, this is how I ended up solving the situation, with pointers from AWS support:<< CREATE NAT >>import boto3 import logging from datetime import datetime ec2 = boto3.client('ec2') cloudwatch = boto3.client('logs') def lambda_handler(even...

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NickLee
by New Contributor III
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How to update num_workers dynamically in a job cluster

I am setting up a workflows with the UI. In the first task, a dynamic value for the next task's num_workers is calculated based on actual data size. In the subsequent task, I'd like to use this calculated num_workers to update the job cluster's defau...

NickLee_0-1722018584496.png
  • 2662 Views
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NickLee
New Contributor III
  • 1 kudos

wonder if anyone has similar experience? thanks

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tramtran
by Contributor
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  • 3 replies
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Resolved! Driver: Out of Memory

Hi everyone,I have a streaming job with 29 notebooks that runs continuously. Initially, I allocated 28 GB of memory to the driver, but the job failed with a "Driver Out of Memory" error after 4 hours of execution.To address this, I increased the driv...

  • 10074 Views
  • 3 replies
  • 5 kudos
Latest Reply
xorbix_rshiva
Databricks MVP
  • 5 kudos

It looks like _source_cdc_time is the timestamp for when the CDC transaction occurred in your source system. This would be a good choice for a timestamp column for your watermark, since you would be deduping values according to the time the transacti...

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