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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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Data + AI Summit 2024 - Data Engineering & Streaming

Forum Posts

zeta_load
by New Contributor II
  • 1047 Views
  • 2 replies
  • 0 kudos

Resolved! When does delta lake actually compute a table?

Maybe I'm completely wrong, but from my understanding delta lake only calculates a table at certain points, for instance when you display your data. Before that point, operations are only written to the log file and are not executed (meaning no chang...

  • 1047 Views
  • 2 replies
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Latest Reply
Anonymous
Not applicable
  • 0 kudos

Hi @Lukas Goldschmied​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you....

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abhishek_dutta3
by New Contributor II
  • 9053 Views
  • 5 replies
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Merge upsert in Delta is throwing error "concurrent merge in delta lake tables in Azure Databricks .ConcurrentAppendException"

This is the error which is coming while processing concurrent merge in delta lake tables in Azure Databricks .ConcurrentAppendException: Files were added to the root of the table by a concurrent update. Please try the operation again.. What are the o...

  • 9053 Views
  • 5 replies
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Latest Reply
Anonymous
Not applicable
  • 0 kudos

Hi @Abhishek Dutta​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you.Tha...

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Smu_Tan
by New Contributor
  • 1771 Views
  • 3 replies
  • 1 kudos

Resolved! Does Databricks supports the Pytorch Distributed Training for multiple devices?

Hi, Im trying to use the databricks platform to do the pytorch distributed training, but I didnt find any info about this. What I expected is using multiple clusters to run a common job using pytorch distributed data parallel (DDP) with the code belo...

  • 1771 Views
  • 3 replies
  • 1 kudos
Latest Reply
axb0
New Contributor III
  • 1 kudos

With Databricks MLR, HorovodRunner is provided which supports distributed training and inference with PyTorch. Here's an example notebook for your reference: PyTorchDistributedDeepLearningTraining - Databricks.

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vinaykumar
by New Contributor III
  • 1260 Views
  • 3 replies
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Resolved! Time travel and version control- can create custom version control for each day data load when multiple updates happening in a day.

Time travel and version control- can create custom version control for each day data load when multiple updates happening in a day. For example , let’s assume we are doing multiple operation on table in a day every minute and want to keep time travel...

  • 1260 Views
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Anonymous
Not applicable
  • 0 kudos

Hi @vinay kumar​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you.Thanks...

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srDataEngineer
by New Contributor II
  • 2605 Views
  • 4 replies
  • 2 kudos

Resolved! how does databricks time travel work

Hi, Since it is not very well explained, I want to know if the table history is a snapshot of the whole table at that point of time containing all the data or it tracks only some metadata of the table changes.To be more precise : if I have a table in...

  • 2605 Views
  • 4 replies
  • 2 kudos
Latest Reply
Anonymous
Not applicable
  • 2 kudos

Hi @data engineer​ Hope everything is going great.Just wanted to check in if you were able to resolve your issue. If yes, would you be happy to mark an answer as best so that other members can find the solution more quickly? If not, please tell us so...

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aline_alvarez
by New Contributor III
  • 2922 Views
  • 6 replies
  • 7 kudos

Resolved! How can I delete a file in DBFS with Illegal character?

How can I delete a file in DBFS with Illegal character?Someone put the file named "planejamento_[4098.]___SHORT_SAIA_JEANS__.xlsx" inside the folder /FileStore and I can delete it, because of this error: java.net.URISyntaxException: Illegal character...

  • 2922 Views
  • 6 replies
  • 7 kudos
Latest Reply
-werners-
Esteemed Contributor III
  • 7 kudos

try this %sh ls -li /dbfsif the file is located in a subdirectory you can change the path mentioned above.the %sh magic command gives you access to linux shell commands.

  • 7 kudos
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EDDatabricks
by Contributor
  • 2375 Views
  • 2 replies
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Resolved! Pool Max Capacity vs Cluster Max Workers

Hi all, we have a databricks instance on Azure with a Compute Cluster version 7.3 LTS. Currently the cluster has 4 max workers (min workers: 1) of type: Standard_D13_v2 and 1 driver of the same type. There are several jobs that are running on this cl...

  • 2375 Views
  • 2 replies
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Latest Reply
Anonymous
Not applicable
  • 0 kudos

Hi @EDDatabricks EDDatabricks​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear f...

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tinendra
by New Contributor III
  • 2738 Views
  • 5 replies
  • 5 kudos

How to reduce time while loading data into the azure synapse table?

Hi All,I just wanted to know if is there any option to reduce time while loading Pyspark Dataframe into the Azure synapse table using Databricks.like..I have a pyspark dataframe that has around 40k records and I am trying to load data into the azure ...

  • 2738 Views
  • 5 replies
  • 5 kudos
Latest Reply
Anonymous
Not applicable
  • 5 kudos

Hi @Tinendra Kumar​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you.Tha...

  • 5 kudos
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Murthy1
by Contributor II
  • 4717 Views
  • 3 replies
  • 3 kudos

Resolved! Impacts of running multiple jobs in parallel that refers the same notebook

Can I run multiple jobs(for example: 100+) in parallel that refers the same notebook? I supply each job with a different parameter. If we can do this, what would be the impact? (for example: reliability, performance, troubleshooting etc. )Example: N...

  • 4717 Views
  • 3 replies
  • 3 kudos
Latest Reply
Anonymous
Not applicable
  • 3 kudos

Hi @Murthy Ramalingam​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you....

  • 3 kudos
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venkat-bodempud
by New Contributor III
  • 1979 Views
  • 4 replies
  • 3 kudos

Resolved! Databricks Design Help

Hello Community,I am currently working on populating gold layer tables. Source for these gold layer tables are silver layer tables. A query is going to run on silver layer tables, spark sql query contains joins between multiple tables.ex:select colum...

  • 1979 Views
  • 4 replies
  • 3 kudos
Latest Reply
Anonymous
Not applicable
  • 3 kudos

Hi @bodempudi venkat​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you.T...

  • 3 kudos
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MelMazz
by New Contributor
  • 1842 Views
  • 2 replies
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Data in transit security when using jdbc connections.

When using spark.read.jdbc() for a direct connection, how is data in transit secured?

  • 1842 Views
  • 2 replies
  • 0 kudos
Latest Reply
Anonymous
Not applicable
  • 0 kudos

Hi @Melody Mazaiwana​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you.T...

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167559
by New Contributor III
  • 1592 Views
  • 3 replies
  • 4 kudos

Internal error message: Failed to launch spark container on instance i-xxxxxxxxxxxxx. Exception: Unexpected internal error, please contact Databricks support

I have a docker image for debezium in my ECR repo and added IAM roles from Databricks to pull this image for my cluster and seeing this error when cluster is created

  • 1592 Views
  • 3 replies
  • 4 kudos
Latest Reply
167559
New Contributor III
  • 4 kudos

I have been trying for more than a week now..... where is the logs for these pulls,....error message is not helpful

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vinaykumar
by New Contributor III
  • 1981 Views
  • 1 replies
  • 0 kudos

Resolved! Pros and cons - running SQL query in databricks notebook and serverless warehouse sql editor

Can you please help technical pros and cons for running SQL query in databricks notebook (data engineering workspace) and serverless warehouse SQL editor

  • 1981 Views
  • 1 replies
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Latest Reply
Anonymous
Not applicable
  • 0 kudos

NotebookPROS: More traditional cluster, git integration, choose DBR versionCONS: Cluster startup time, photon not automatically part of the clusterServerlessPROS: Faster, almost immediate startup time, less expensive for a single query, photon enable...

  • 0 kudos
petehart92
by New Contributor II
  • 2786 Views
  • 5 replies
  • 6 kudos

Error While Rendering Visualization -- Map (Markers)

I have a table with latitude and longitude for a few addresses (no more than 10 at the moment) but when I select the appropriate columns in the visualization editor for Map (Markers) I get an message that states "error while rendering visualization"....

Not a lot of detail...
  • 2786 Views
  • 5 replies
  • 6 kudos
Latest Reply
SawyKoop_2865
New Contributor II
  • 6 kudos

Seeing the same issue

  • 6 kudos
4 More Replies
ABVectr
by New Contributor III
  • 2391 Views
  • 6 replies
  • 1 kudos

Resolved! Maven Package install failing on DBR 11.3 LTS

Hi Databricks Community,I ran into the following issue when setting up a new cluster with the latest LTS Databricks runtime (11.3). When trying to install the package with the coordinates com.microsoft.azure.kusto:kusto-spark_3.0_2.12:3.1.4 from Mave...

  • 2391 Views
  • 6 replies
  • 1 kudos
Latest Reply
Anonymous
Not applicable
  • 1 kudos

Hi @Andrei Bondarenko​ Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you....

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