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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

User16826994223
by Databricks Employee
  • 3378 Views
  • 2 replies
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Resolved! Error during setup of cluster

Unexpected Launch Failure: An unexpected error was encountered while setting up the cluster. Please retry and contact Azure Databricks if the problem persists. Internal error message: Timeout while placing node.

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Latest Reply
Will1
New Contributor III
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Ensure that CNO$ account has Full Control on the CNO and The computers container;Add CNO$ account (CNO computer object) in Local Admins group;Finally, add CNO$ in Domain Admins group.Regards,Willjoe

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data_testing1
by New Contributor III
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Can databricks be used locally to learn it or is it cloud only

I'm tired of telling clients or referrals I don't know databricks but it seems like the only option is to have a big AWS account and then use databricks on that data. Can I download it locally for training, upskilling with python or is it only for cl...

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Anonymous
Not applicable
  • 13 kudos

Thanks for linking directly to the docker image @Hubert Dudek​ ! And thanks for the info @Prabakar Ammeappin​ and @Amit Nainawati​ @Andrew Schell​ Let us know if you have more questions! If not, choose a best answer in this thread and let us know how...

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MadelynM
by Databricks Employee
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How do I move existing workflows and jobs running on an all-purpose cluster to a shared jobs cluster?

A Databricks cluster is a set of computation resources that performs the heavy lifting of all of the data workloads you run in Databricks. Databricks provides a number of options when you create and configure clusters to help you get the best perform...

Left navigation bar selecting Data Science & Engineering Left nav Workflows selected Screen Shot 2022-07-05 at 10.24.37 AM Screen Shot 2022-07-05 at 10.24.46 AM
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Latest Reply
Anonymous
Not applicable
  • 3 kudos

@Doug Harrigan​ Thanks for your question! @Prabakar Ammeappin​ linked above to our Docs page that mentions a bit more about the recent (April) version update/change: "This release fixes an issue that removed the Swap cluster button from the Databrick...

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NicolasEscobar
by New Contributor II
  • 13887 Views
  • 7 replies
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Resolved! Job fails after runtime upgrade

I have a job running with no issues in Databricks runtime 7.3 LTS. When I upgraded to 8.3 it fails with error An exception was thrown from a UDF: 'pyspark.serializers.SerializationError'... SparkContext should only be created and accessed on the driv...

  • 13887 Views
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Latest Reply
User16873042682
Databricks Employee
  • 5 kudos

Adding to @Sean Owen​  comments, The only reason this is working is that the optimizer is evaluating this locally rather than creating a context on executors and evaluating it.

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Raymond_Garcia
by Contributor II
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Resolved! query array in SQL

Hello I have a databricks question I was not able to answer myselfI have this queryselect count(*) from tablewhere object[0].value is not null and object[0].value.value1 = "s"and created_year = 2022 and created_month = 7 and created_day = 4you can se...

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Latest Reply
Raymond_Garcia
Contributor II
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SELECT count(*)FROM ( SELECT explode(mmycolumn) FROM table WHERE created_year = 2022 and created_month = 7 and created_day = 5)WHERE col.field is not null and col.field.field! = "signal"

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Vaibhav_552636
by New Contributor II
  • 2867 Views
  • 0 replies
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Delta Table Merge Operation logs Output is not correct number of updated records?

Hi all,I am performing merge operation on my delta table in spark. I have existing delta table , it already has some records. Now I created another dataframe of csv file, and added one new record and updated one records in that. Please check below sn...

initial delta table updated_source_tables for merge merger statment
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LearningDatabri
by Contributor II
  • 11120 Views
  • 7 replies
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Resolved! Unable to read file from S3

I tried to read a file from S3, but facing the below error:org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 53.0 failed 4 times, most recent failure: Lost task 0.3 in stage 53.0 (TID 82, xx.xx.xx.xx, executor 0): com...

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Latest Reply
Sivaprasad1
Databricks Employee
  • 2 kudos

Which DBR version are you using? Could you please test it with a different DBR version probably DBR 9.x?

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THIAM_HUATTAN
by Valued Contributor
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  • 4 replies
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Resolved! why this not able to go through?

https://textdoc.co/index.php/UFEQdwxWn60LtOVfError:https://textdoc.co/index.php/3JisnHKGkvLIaAOF

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Latest Reply
Hubert-Dudek
Databricks MVP
  • 6 kudos

It would be best if you used Databricks ML runtime (in cluster settings), not the standard one.

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THIAM_HUATTAN
by Valued Contributor
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Resolved! Save data from Spark DataFrames to TFRecords

https://docs.microsoft.com/en-us/azure/databricks/_static/notebooks/deep-learning/tfrecords-save-load.htmlI could not run the Cell # 2java.lang.ClassNotFoundException: --------------------------------------------------------------------------- Py4JJ...

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Latest Reply
jose_gonzalez
Databricks Employee
  • 0 kudos

Hi @THIAM HUAT TAN​,Which DBR version are you using? are you using the ML runtime?

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User16826994223
by Databricks Employee
  • 3387 Views
  • 1 replies
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Unity Catalog will allow you to bring your own HMS

Anyone know more about how the Unity Catalog will allow you to bring your own HMS (eg Glue)?Will this be treated as a separate 'catalog', which you can access but you can't use the other features of Unity Catalog on eg ABAC etcAny reading on this top...

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Latest Reply
zpappa
Databricks Employee
  • 1 kudos

@Kunal Gaurav​ yes, it is treated as a synthetic catalog. You can query it by using the convention "hive_metastore" as the catalog name. i.e. SELECT * FROM hive_metastore.schema_name.table_nameThis will work for internal HMS, external HMS and Glue.Yo...

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PP1
by New Contributor II
  • 5224 Views
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  • 5224 Views
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Latest Reply
zpappa
Databricks Employee
  • 2 kudos

@Prashanth P​ We offer a fully featured REST API with Unity Catalog that provides the ability to CRUD objects such as catalogs/schemas/tables/acls/lineage etc.Companies like Colliba/Alation/MS Purview etc use these in middleware integrations to integ...

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OliverLewis
by New Contributor
  • 3841 Views
  • 2 replies
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Parallelize spark jobs on the same cluster?

Whats the best way to parallelize multiple spark jobs on the same cluster during a backfill?

  • 3841 Views
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Latest Reply
ron_defreitas
Contributor
  • 1 kudos

In the past I used direct multi-threaded orchestration inside of driver applications, but that was prior to Databricks supporting multi-task jobs.If you create a job through the workflows tab, you can set up multiple notebooks, python, or jar tasks t...

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mortenhaga
by Contributor
  • 6336 Views
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Resolved! SQL Serverless Endpoint failing to start with Instance Profile

Hi allSuper stoked about the PP of SQL Serverless, but it does seem that the instance profile Im using doesnt have the required trust relationship for it to work with the Sererless Endpoint. Altough on "classic" mode it works fine. Does Serverless re...

image
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Latest Reply
Anonymous
Not applicable
  • 4 kudos

Thank you for sharing your valuable solution, it's work properly.mymilestonecard

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