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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

alexraj84
by New Contributor
  • 15470 Views
  • 2 replies
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How to read a fixed length file in Spark using DataFrame API and SCALA

I have a fixed length file ( a sample is shown below) and I want to read this file using DataFrames API in Spark using SCALA(not python or java). Using DataFrames API there are ways to read textFile, json file and so on but not sure if there is a wa...

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Nagendra
Databricks Partner
  • 0 kudos

Find the below solution which can be used. Let us consider this is the data in the file. EMP ID   First Name              Last Name                       1Chris                   M                                                     2John            ...

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aditya_raj_data
by New Contributor II
  • 9661 Views
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Hosting python application on Azure Databricks and exposing it's rest APIs

Hello,   I am trying to host my application on Databricks and I want to expose rest APIs of my application to be accessed from postman but I am unable to find any documentation on how to do this. I tried to write simple flask "hello world" code to tr...

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Manoj
Contributor II
  • 2 kudos

I did this using Azure web app and exposed the APIs , was able to access that in Post Man and Data bricks. Not used python app on data bricks

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User16753725182
by Databricks Employee
  • 4313 Views
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How to setup a private git repository in my workspace?

How to setup a private git repository in my workspace?

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atulsahu
New Contributor II
  • 0 kudos

As a platform engineer, I would go to the admin console and click on "workspace settings" and start by looking into the below settings. Repos: true, so that Repos integration is possibleThe next two settings, are important to make the overall experi...

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Rnmj
by New Contributor III
  • 18363 Views
  • 3 replies
  • 6 kudos

ConnectException: Connection refused (Connection refused) This is often caused by an OOM error

I am trying to run a python code where a json file is flattened to pipe separated file . The code works with smaller files but for huge files of 2.4 GB I get below error:ConnectException: Connection refused (Connection refused)Error while obtaining a...

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Rnmj
New Contributor III
  • 6 kudos

Hi @Jose Gonzalez​ , @Werner Stinckens​  @Kaniz Fatma​ ,Thanks for your response .Appreciate a lot. The issue was in the code, it was a python /panda code running on Spark. Due to this only driver node was being used. i did validate this by increasin...

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krishnakash
by New Contributor II
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Resolved! Is there any way of determining last stage of SparkSQL Application Execution?

I have created custom UDF's that generate logs. These logs can be flushed by calling another API exposed which is exposed by an internal layer. However I want to call this API just after the execution of the UDF comes to an end. Is there any way of d...

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User16763506586
Databricks Employee
  • 4 kudos

@Krishna Kashiv​ May be ExecutorPlugin.java can help. It has all the methods you might required. Let me know if it works or not.You need to implement this interface org.apache.spark.api.plugin.SparkPluginand expose it as spark.plugins = com.abc.Imp...

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Braxx
by Contributor II
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Retry api request if fails

I have a simple API request to query a table and retrive data, which are then suited into a dataframe. May happened, it fails due to different reasons. How to retry it for let's say 5 times when any kind of error takes place? Here is an api request:d...

  • 3263 Views
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Manoj
Contributor II
  • 3 kudos

@Bartosz Wachocki​ ,Use timeout, retry interval ,recursion and exception handling pseudo code belowtimeout = 300def exec_query(query,timeout): try: df = spark.createDataFrame(sf.bulk.MyTable.query(query)) except: if timeout > 0 : sleep(60) exec_que...

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adb-rm
by New Contributor II
  • 3730 Views
  • 2 replies
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Resolved! mail configuration azure data bricks pyspark notebook

Hi All,i am new to azure databricks , i am using pyspark .. we need to configure mail alerts when notebook failed or succeeded ..please can some one help me in mail configuration azure data bricks .Thanks

  • 3730 Views
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-werners-
Esteemed Contributor III
  • 2 kudos

the easiest way to schedule notebooks in Azure is to use Data Factory.In Data Factory you can schedule the notebooks and define the alerts you want to send.The other option is the one Hubert mentioned.

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dimoobraznii
by New Contributor III
  • 9214 Views
  • 2 replies
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databricks-connect' is not recognized as an internal or external command, operable program or batch file on windows

Hello,I've installed databricks-connect on Windows 10:C:\Users\danoshin>pip install -U "databricks-connect==9.1.*" Collecting databricks-connect==9.1.* Downloading databricks-connect-9.1.2.tar.gz (254.6 MB) |████████████████████████████████| 2...

  • 9214 Views
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-werners-
Esteemed Contributor III
  • 9 kudos

@Dmitry Anoshin​ , that seems messed up.the best you can do is to remove databricks connect and also to uninstall any pyspark installation.And then follow the installation guide.It should work after following the procedure.I use a Linux VM for this p...

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Greg_Galloway
by New Contributor III
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Resolved! Use of private endpoints for storage in workspace with EnableNoPublicIP=Yes and VnetInjection=No

We know that Databricks with VNET injection (our own VNET) allows is to connect to ADLS Gen2 over private endpoints. This is what we typically do.We have a customer who created Databricks with EnableNoPublicIP=Yes (secure cluster connectivity) and Vn...

  • 14463 Views
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User16871418122
Databricks Employee
  • 3 kudos

Managed VNET is locked and allows very limited config tuning like VNET peering that too facilitated and needs to be done from Databricks UI. If they want more control on VNET they need to migrate to VNET injected workspace.

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Manoj
by Contributor II
  • 9673 Views
  • 9 replies
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Resolved! Is there a way to persist the delta cache even after the cluster restart?

Hi Team, we are planning to connect Power BI directly to Data bricks, however data fetching using direct query isn't giving great performance, though we are using Zorder by and Partition etc.. We decided to use Delta Cache, but the cache tables area ...

  • 9673 Views
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Manoj
Contributor II
  • 8 kudos

@Hubert Dudek​ , I got a good news, I agree with @Werner Stinckens​ , SQL End Point is super fast, I have tested for 143 million records with Direct Query from power bi, result returned in 10-12 seconds. Don't even try doing incremental in power bi, ...

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pantelis_mare
by Contributor III
  • 23590 Views
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Resolved! [SOLVED] maxPartitionBytes ignored?

Hello all!I'm running a simple read noop query where I read a specific partition of a delta table that looks like this:With the default configuration, I read the data in 12 partitions, which makes sense as the files that are more than 128MB are split...

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ashish1
Databricks Employee
  • 5 kudos

AQE doesn't affect the read time partitioning but at the shuffle time. It would be better to run optimize on the delta lake which will compact the files to approx 1 GB each, it would provide better read time performance.

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Nickels
by Databricks Partner
  • 4450 Views
  • 4 replies
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Resolved! Reply on inline runtime commands

I feel like the answer to this question should be simple, but none the less I'm struggling.I run a python code that prompts me with the following warning:On my local machine, I can accept this through my terminal and my machine do not run out of memo...

image
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jose_gonzalez
Databricks Employee
  • 1 kudos

Hi @Nickels Köhling​ ,In Databricks, you will only be able to see the output in the driver logs. If you go to your driver logs, you will be able to see 3 windows that are displaying the output of "stdout", "stderr" and "log4j".If in your code you do ...

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francescocamuss
by Databricks Partner
  • 6522 Views
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How to make terminal available when starting a cluster with a docker image?

Hello everybody, I'm starting a cluster with a docker image because I my team use a lot of R libraries that would be time consuming to install them on a init script. The thing is that the cluster starts ok, but I can't acces to the cluster terminal a...

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Prabakar
Databricks Employee
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@Francesco Camussoni​  are you using databricksruntime/rbase as your base image?

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yatharth29
by Databricks Partner
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  • 4727 Views
  • 1 replies
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Sajesh
Databricks Employee
  • 2 kudos

Hi @Yatharth Kaushik​ ,You can get the data into a table using the clusters event API: https://docs.databricks.com/dev-tools/api/latest/clusters.html#events

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snarfed
by New Contributor II
  • 4098 Views
  • 3 replies
  • 5 kudos

Serverless SQL endpoints on Azure?

Serverless SQL Endpoints sound exciting! Sounds like they've been in preview on AWS for a couple months. Any idea if/when they're coming to Azure?

  • 4098 Views
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Latest Reply
-werners-
Esteemed Contributor III
  • 5 kudos

There is always Synapse Serverless muhahaha

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