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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

hal-qna
by New Contributor
  • 3951 Views
  • 1 replies
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Unable to instantiate Hive Meta Store Client

Databricks python sql script gives below error: Error in SQL statement: AnalysisException: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.metastore.HiveMetaStoreClient 

halqna_0-1698241888233.png
  • 3951 Views
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Latest Reply
jose_gonzalez
Databricks Employee
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Hi @hal-qna, Just a friendly follow-up. Have you had a chance to review my colleague's response to your inquiry? Did it prove helpful, or are you still in need of assistance? Your response would be greatly appreciated.

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Srikanth_Gupta_
by Databricks Employee
  • 7520 Views
  • 2 replies
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  • 7520 Views
  • 2 replies
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Latest Reply
BilalAslamDbrx
Databricks Employee
  • 1 kudos

I'll try to answer this in the simplest possible way 1. Spark is an imperative programming framework. You tell it what it to do, it does it. DLT is declarative - you describe what you want the datasets to be (i.e. the transforms), and it takes care ...

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rt-slowth
by Contributor
  • 8538 Views
  • 1 replies
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Resolved! how to run @dlt pipeline in vscode

I want to test a pipeline created using dlt and python in vscode.

  • 8538 Views
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BilalAslamDbrx
Databricks Employee
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Hey @rt-slowth check out this tutorial. You won't get debugging in VSCode yet, but this workflow is pretty nice.

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Gilg
by Contributor II
  • 2899 Views
  • 1 replies
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Data Encryption in DLT

Hi Team,We have a requirement to Encrypt PII data in Silver layer. What is the best way to implement this in DLT? and only users that has security privileges are able to decrypt the PII info.I have done this in the past using Structured Streaming but...

Data Engineering
Delta Live Table
Encryption
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  • 1 replies
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Latest Reply
Gilg
Contributor II
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Can you show me how to use the functions built in pyspark using DLT please.Also, trying to implement column/row level security in silver tables that is generated by DLT, but giving me the following error[RequestId=35024c5d-ad05-4f68-a4cb-f3a723f66e1c...

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T_1
by New Contributor III
  • 40955 Views
  • 13 replies
  • 3 kudos

Resolved! displayHTML can't seem to be used from Python code, only hand typed into a cell???

Trying to use displayHTML from w/in a Python module gets a Python exception:NameError: name 'displayHTML' is not definedand I've found no way around this. It seems to be something at the UI layer or something, not a Python function that can be refere...

  • 40955 Views
  • 13 replies
  • 3 kudos
Latest Reply
T_1
New Contributor III
  • 3 kudos

Holy Guacamole Batman! It works finally!!!! Wow, thanks @ptweir That's awesome! I can go back and update my doc (and code, to just use databricks the same, now, and Jupyter!) and it'll work by default. It's great they fixed it, shame they never told ...

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pavlos_skev
by New Contributor III
  • 7495 Views
  • 2 replies
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Resolved! Invalid configuration value detected for fs.azure.account.key only when trying to save RDD

Hello,We have encountered a weird issue in our (old) set-up that looks like a bug in the Unity Catalog. The storage account which we are trying to persist is configured via External Volumes.We have a pipeline that gets XML data and stores it in an RD...

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pavlos_skev
New Contributor III
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I will post here what worked resolving this error for us, in case someone else in the future encounters this.It turns out that this error appears in this case, when we were using the below command while the directory 'staging2' already exists. To avo...

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Braxx
by Contributor II
  • 14450 Views
  • 3 replies
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Resolved! How to kill the execution of a notebook on specyfic cell?

Let's say I want to check if a condition is false then stop the execution of the rest of the script. I tried with two approaches:1) raising exceptionif not data_input_cols.issubset(data.columns): raise Exception("Missing column or column's name mis...

  • 14450 Views
  • 3 replies
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Latest Reply
Invasioned
New Contributor II
  • 1 kudos

In Jupyter notebooks or similar environments, you can stop the execution of a notebook at a specific cell by raising an exception. However, you need to handle the exception properly to ensure the execution stops. The issue you're encountering could b...

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ashdam
by New Contributor III
  • 10786 Views
  • 9 replies
  • 2 kudos

Resolved! How to version your workflows/jobs

WE would like to version control workflows/jobs over git, not the underlying notebooks but the job logic itselfis it possible?

  • 10786 Views
  • 9 replies
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Latest Reply
ashdam
New Contributor III
  • 2 kudos

Thank you very much for all your answers

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8 More Replies
madhav_dhruve
by New Contributor III
  • 5696 Views
  • 1 replies
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Move Files from S3 to Local File System with Unity Catalog Enabled

Dear Databricks Community Experts,I am working on databricks on AWS with unity catalog.One usecase for me is to uncompress files with many extensions there on S3 Bucket.Below is my strategy:-Move files from S3 to Local file system (where spark driver...

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  • 5696 Views
  • 1 replies
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Latest Reply
rvadali2
New Contributor II
  • 0 kudos

did you find a solution to this? 

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User16826990884
by Databricks Employee
  • 5404 Views
  • 3 replies
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Version control jobs

How do engineering teams out there version control their jobs? If there is a production issue, can I revert to an older version of the job?

  • 5404 Views
  • 3 replies
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Latest Reply
Rom
New Contributor III
  • 0 kudos

You can use version controlled source code for you databricks job and each time you need to rollback to older version of your job you need just to move to older version code. For version controlled source code you have multiple choises:-  Use a noteb...

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azera
by New Contributor II
  • 2984 Views
  • 2 replies
  • 2 kudos

Stream-stream window join after time window aggregation not working in 13.1

Hey,I'm trying to perform Time window aggregation in two different streams followed by stream-stream window join described here. I'm running Databricks Runtime 13.1, exactly as advised.However, when I'm reproducing the following code:clicksWindow = c...

  • 2984 Views
  • 2 replies
  • 2 kudos
Latest Reply
Happyfield7
New Contributor II
  • 2 kudos

Hey,I'm currently facing the same problem, so I would to know if you've made any progress in resolving this issue.

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Rani
by New Contributor
  • 10877 Views
  • 2 replies
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Divide a dataframe into multiple smaller dataframes based on values in multiple columns in Scala

I have to divide a dataframe into multiple smaller dataframes based on values in columns like - gender and state , the end goal is to pick up random samples from each dataframeI am trying to implement a sample as explained below, I am quite new to th...

  • 10877 Views
  • 2 replies
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Latest Reply
subham0611
New Contributor II
  • 0 kudos

@raela I also have similar usecase. I am writing data to different databricks tables based on colum value.But I am getting insufficient disk space error and driver is getting killed. I am suspecting df.select(colName).distinct().collect()step is taki...

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Leszek
by Contributor
  • 8184 Views
  • 1 replies
  • 2 kudos

IDENTITY columns generating every other number when merging

Hi,I'm doing merge to my Delta Table which has IDENTITY column:Id BIGINT GENERATED ALWAYS AS IDENTITYInserted data has in the id column every other number, like this:Is this expected behavior? Is there any workaround to make number increasing by 1?

image
  • 8184 Views
  • 1 replies
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Latest Reply
Dataspeaksss
New Contributor II
  • 2 kudos

Were you able to resolve it? I'm facing the same issue.

  • 2 kudos
Mohammad_Younus
by New Contributor
  • 5577 Views
  • 0 replies
  • 0 kudos

Merge delta tables with data more than 200 million

HI Everyone,Im trying to merge two delta tables who have data more than 200 million in each of them. These tables are properly optimized. But upon running the job, the job is taking a long time to execute and the memory spills are huger (1TB-3TB) rec...

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  • 5577 Views
  • 0 replies
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