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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

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Shadowsong27
by • New Contributor III
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Resolved! Mongo Spark Connector 3.0.1 seems not working with Databricks-Connect, but works fine in Databricks Cloud

On latest DB-Connect==9.1.3 and dbr == 9.1, retrieving data from mongo using Maven coordinate of Mongo Spark Connector: org.mongodb.spark:mongo-spark-connector_2.12:3.0.1 - https://docs.mongodb.com/spark-connector/current/ - working fine previously t...

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mehdi3x
New Contributor II
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Hi everyone the solution for me it was to replace spark.read.format("mongo") by spark.read.format("mongodb") my spark version is 3.3.2 and my mongodb version is 6.0.6 . 

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erigaud
by • Honored Contributor
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Deploying existing queries and alerts to other workspaces

I have several queries and associated alerts in a workspace, and I would like to be able to deploy them to an other workspace, for example an higher environment. Since both queries and objects are not supported in repos, what is the way to go to easi...

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Anonymous
Not applicable
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Hi @erigaud  We haven't heard from you since the last response from @btafur , and I was checking back to see if her suggestions helped you. Or else, If you have any solution, please share it with the community, as it can be helpful to others.  Also, ...

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dprutean
by • New Contributor III
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JDBC DatabaseMetaData.getCatalogs()

Calling the DatabaseMetaData.getCatalogs() returns 'spark_catalogs instead' of 'hive_metastore', when connected to tradition version of databricks cluster which is not signed with uc_catalog tag.Please check this.

Data Engineering
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VD10
by • New Contributor
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Data Engineering Professional Certificate

On the way to obtain the certificate. Any preparing tips would be appreciated! Thanks!

Data Engineering
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dplante
Contributor II
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Disclaimer - I haven't taken this exam yet A couple of suggestions (from this forum, google searches, etc):- check out this blog post - https://medium.com/@sjrusso/passing-the-databricks-professional-data-engineer-exam-115cccc90aba#:~:text=I%20recent...

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KKo
by • Contributor III
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Resolved! Union Multiple dataframes in loop, with different schema

With in a loop I have few dataframes created. I can union them with out an issue if they have same schema using (df_unioned = reduce(DataFrame.unionAll, df_list). Now my problem is how to union them if one of the dataframe in df_list has different nu...

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anoopunni
New Contributor II
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Hi,I have come across same scenario, using reduce() and unionByname we can implement the solution as below:val lstDF: List[Datframe] = List(df1,df2,df3,df4,df5)val combinedDF = lstDF.reduce((df1, df2) => df1.unionByName(df2, allowMissingColumns = tru...

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VikashKumar
by • New Contributor
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Is there any way to convert delta share short-lived presigned URLs to CSV files at Client End

Hello All, I have requirement , where I need to disclose the data at the client end and they are suppose to access the data in CSV format. I am planning to use Delta Sharing integrated with Unity Catalog. As we know, according to Delta sharing protoc...

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180122
by • New Contributor II
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Data Engineering Professional - Practice exam?

Hi, when will we get Practice Exams for this the Data Engineering Professional Certification Exam? It seems like we already have it for a good amount of the associate exams, and this Professional exam seems more difficult than the associate ones, so ...

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Anonymous
Not applicable
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Hi @180122  Hope you are well. Just wanted to see if you were able to find an answer to your question and would you like to mark an answer as best? It would be really helpful for the other members too. Cheers!

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bradleyjamrozik
by • New Contributor III
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Resolved! Questions about Lineage and DLT

Hey there!1. Does column lineage work across multiple catalogs and schemas?2. Do Delta Live Tables support lineage? If yes does that work across multiple pipelines or only with a single one?

Data Engineering
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Anonymous
Not applicable
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Hi @bradleyjamrozik  We haven't heard from you since the last response from @Vinay_M_R and @erigaud , and I was checking back to see if her suggestions helped you. Or else, If you have any solution, please share it with the community, as it can be he...

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YS1
by • Contributor
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Updating tables from SQL Server to Databricks

Hi,I have SQL Server tables which are the primary location for all live transactions happen and currently I read them through pyspark as dataframes and overwrite them everyday to have the latest copy of them in Databricks. The problem is it takes lon...

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Anonymous
Not applicable
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Hi @YS1  Hope you are well. Just wanted to see if you were able to find an answer to your question and would you like to mark an answer as best? It would be really helpful for the other members too. Cheers!

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samuraidjakk
by • New Contributor II
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Resolved! Lineage from Unity Catalog on GCP

We are in the prosess of trying to do a PoC of our pipelines using DLT. Normally, we use another tool and we have created a custom program to extract lineage. We want to try to get / display lineage using Unity Catalog.But.. we are on GCP, and it see...

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Anonymous
Not applicable
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Hi @samuraidjakk  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? If not, please tell us so we can help you. Thanks!

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SRK
by • Contributor III
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Resolved! How to deploy Databricks SQL queries and SQL Alerts from lower environment to higher environment?

We are using Databricks SQL Alerts to handle one scenario. We have written the queries for the same, also we have created the SQL Alert. However, I was looking for the best way to deploy it on Higher Environments like Pre-Production and Production.I ...

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valeryuaba
New Contributor III
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Thanks!

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erigaud
by • Honored Contributor
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Resolved! Autoloader Excel Files

Hello, I looked at the documentation but could not find what I wanted. Is there a way to load Excel files using an autoloader and if yes, what options should be given to specify format, sheet name etc ? Thank you friends !

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Hemant
Valued Contributor II
  • 4 kudos

Unfortunately, Databricks autoloader doesn't support Excel file types to incrementally load new files.Link:https://docs.databricks.com/ingestion/auto-loader/options.html If your excel file contains a single sheet then there is a workaround.

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sumit23
by • New Contributor
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[Error] [SECRET_FUNCTION_INVALID_LOCATION]: While running secret function with create or replace

Hi, recently we made an upgrade to our databricks warehouse, transitioning from SQL Classic to SQL PRO.However, we started encountering the following error message when attempting to execute the "CREATE or REPLACE" table query with the secret functio...

Data Engineering
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BasavarajAngadi
by • Contributor
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Resolved! Question on Transaction logs and versioning in data bricks ?

Hi Experts ,No doubt data bricks supports ACID properties. What when it comes to versioning how much such versions will data bricks captures ? For Example : If i do any DML operations on top of Delta tables every time when i do it captures the tran...

Data Engineering
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stefnhuy
New Contributor III
  • 1 kudos

Hey,As a data enthusiast myself, I find this topic quite intriguing. Data Bricks indeed does a fantastic job in supporting ACID properties, ensuring data integrity, and allowing for versioning.To address BasavarajAngadi's question, Data Bricks effici...

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