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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

ackerman_chris
by New Contributor III
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Resolved! Databricks Lakehouse Fundamentals Badge Not Found

Hello, I've successfully completed the Databricks Lakehouse Fundamentals and am looking to find where the badge is.I found this post here. But I haven't received email on my completion from <service.accredible.email@databricks.com> yet. I successfull...

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ackerman_chris
New Contributor III
  • 0 kudos

Thank You all for the great responses, I eventually received the Badge, it took around 30+ minutes to receive, but I finally did get the Email notification. I will mark this post as resolved

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KrishZ
by Contributor
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[Pyspark.Pandas] PicklingError: Could not serialize object (this error is happening only for large datasets)

Context: I am using pyspark.pandas in a Databricks jupyter notebook and doing some text manipulation within the dataframe..pyspark.pandas is the Pandas API on Spark and can be used exactly the same as usual PandasError: PicklingError: Could not seria...

  • 23446 Views
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ryojikn
New Contributor III
  • 3 kudos

@Krishna Zanwar​ , i'm receiving the same error.​For me, the behavior is when trying to broadcast a random forest (sklearn 1.2.0) recently loaded from mlflow, and using Pandas UDF to predict a model.​However, the same code works perfectly on Spark 2....

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Anuj_Diggibyte
by Databricks MVP
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How to overwrite partition in DLT pipeline ?

I am trying to replicate my existing spark pipeline in DLT. I am not able to achieve desired result using DLT . Current pipeline : source set up : CSV file ingested in bronze using SCP frequency : monthly bronze dir : /cntdlt/bronze/emp/year=2022 /...

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kfoster
Databricks Partner
  • 0 kudos

What I have observed, @dlt.table with a spark.read or dlt.read will create the table in mode=overwrite@dlt.table with a spark.readStream or dlt.readStream will append new datato get the update, use the CDC: Change data capture with Delta Live Tables ...

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SIRIGIRI
by Databricks Partner
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sharikrishna26.medium.com

Difference between “ And ‘ in Spark Dataframe APIYou must tell your compiler that you want to represent a string inside a string using a different symbol for the inner string.Here is an example.“ Name = “HARI” “The above is wrong. Why? Because the in...

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sher
Valued Contributor II
  • 1 kudos

thanks for sharing

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A_Jabbar
by New Contributor
  • 4337 Views
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Resolved! I am unable to create databricks community edition account!!!!!!

This is what I am doing,enter all the details on page 1 click on the Getting stated with community edition, after verification, I get the following error

Error Message on the second page of Registration
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Anonymous
Not applicable
  • 2 kudos

Hi @Abdul Jabbar​ Thank you for reaching out, and we’re sorry to hear about this log-in issue! We have this Community Edition login troubleshooting post on Community. Please take a look, and follow the troubleshooting steps. If the steps do not resol...

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KKo
by Contributor III
  • 3240 Views
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Read and write to XMLA from Databricks notebook

I am trying to process power bi dataset partition refresh from Azure Databricks, using XMLA endpoint. I have power bi premium capacity and read/write enabled. Tried few approaches found in google did not work with one or the other reason. If any of y...

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Anonymous
Not applicable
  • 5 kudos

Hi @Kris Koirala​  Great to meet you, and thanks for your question! Let's see if your peers in the community have an answer to your question first. Or else bricksters will get back to you soon. Thanks.

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KVNARK
by Honored Contributor II
  • 5742 Views
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Resolved! best practices for SQL DB authentication from data bricks

I would like to know the best practices to authenticate SQL db from databricks/python. More interested to hear about some token based DB authentication methods other than credential based(username/password)

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Vivian_Wilfred
Databricks Employee
  • 6 kudos

@KVNARK .​ Have you checked on the PAT token for authentication? https://docs.databricks.com/sql/api/authentication.html

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jm99
by New Contributor III
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Resolved! ForeachBatch() - Get results from batchDF._jdf.sparkSession().sql('merge stmt')

Most python examples show the structure of the foreachBatch method as:def foreachBatchFunc(batchDF, batchId): batchDF.createOrReplaceTempView('viewName') ( batchDF ._jdf.sparkSession() .sql( ...

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jm99
New Contributor III
  • 1 kudos

Just found a solution...Need to convert the Java Dataframe (jdf) to a DataFramefrom pyspark import sql   def batchFunc(batchDF, batchId): batchDF.createOrReplaceTempView('viewName') sparkSession = batchDF._jdf.sparkSession()   resJdf = sparkSes...

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ks1248
by New Contributor III
  • 4320 Views
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Resolved! Autoloader creates columns not present in the source

I have been exploring Autoloader to ingest gzipped JSON files from an S3 source.The notebook fails in the first run due to schema mismatch, after re-running the notebook, the schema evolves and the ingestion runs successfully.On analysing the schema ...

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ks1248
New Contributor III
  • 5 kudos

Hi @Debayan Mukherjee​ , @Kaniz Fatma​ Thank you for replying to my question.I was able to figure out the issue. I was creating the schema and checkpoint folders in the same path as the source location for the autoloader. This caused the schema to ch...

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Phani1
by Databricks MVP
  • 5267 Views
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SUBNET_EXHAUSTED_FAILURE(CLOUD_FAILURE): or No more address space to create NIC within injected virtual network

Currently we are using an all-purpose compute cluster. When we tried to allocate the scheduled jobs to job cluster, we are blocked at the following error:SUBNET_EXHAUSTED_FAILURE(CLOUD_FAILURE): azure_error_code:SubnetIsFull,azure_error_message:No mo...

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daniel_sahal
Databricks MVP
  • 0 kudos

Answering your questions - yes, your vnet/subnet is out of non-occupied IPs and this can be fixed by allocating more IPs to your network address space.Each cluster requires it's own IP, so if there are none available, it simply cannot start.

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lewit
by New Contributor III
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Is it possible to create a feature store training set directly from a feature store table?

Rather than joining features from different tables, I just wanted to use a single feature store table and select some of its features, but still log the model in the feature store. The problem I am facing is that I do not know how to create the train...

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Debayan
Databricks Employee
  • 3 kudos

Hi, Could you please refer https://docs.databricks.com/machine-learning/feature-store/train-models-with-feature-store.html#create-a-trainingset-using-the-same-feature-multiple-times and let us know if this helps.

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gpzz
by New Contributor III
  • 3323 Views
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MEMORY_ONLY not working

val doubledAmount = premiumCustomers.map(x=>(x._1, x._2*2)).persist(StorageLevel.MEMORY_ONLY) error: not found: value StorageLevel

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Chaitanya_Raju
Honored Contributor
  • 1 kudos

Hi @Gaurav Poojary​ ,Can you please try the below as displayed in the image it is working for me without any issues.Happy Learning!!

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bozhu
by Contributor
  • 3268 Views
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Set taskValues in DLT workbooks

Is "setting taskValues in DLT workbooks" supported?I tried setting a task value in a DLT workbook, but it does not seem supported, so downstream workbooks within the same workflows job cannot consume this task value.

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Lê_Ngọc_Lợi
New Contributor III
  • 3 kudos

I have the same issue, I also want to know databricks support taskValue between taskJob and DLT or not?

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Vik1
by New Contributor II
  • 12921 Views
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Some very simple functions in Pandas on Spark are very slow

I have a pandas on spark dataframe with 8 million rows and 20 columns. It took 3.48 minutes to run df.shape and it takes. It also takes a long time to run df.head took 4.55 minutes . By contrast df.var1.value_counts().reset_index() took only 0.18 sec...

  • 12921 Views
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PeterDowdy
New Contributor II
  • 5 kudos

The reason why this is slow is because pandas needs an index column to perform `shape` or `head`. If you don't provide one, pyspark pandas enumerates the entire dataframe to create a default one. For example, given columns A, B, and C in dataframe `d...

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sunil_smile
by Contributor
  • 8070 Views
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Vnet peering settings is not enable in Azure databricks premium , even though its deployed inside my VNET?

Hi All,Vnet peering settings is not enabled in Azure databricks , even though its deployed inside my VNET?Here i not mentioned my vnet and subnet details , but filled this and created databricks (without private endpoint - allow public access)virtual...

image image image
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Debayan
Databricks Employee
  • 1 kudos

Hi, VNET peering is not supported or possible on VNET-injected workspaces. Please refer: https://learn.microsoft.com/en-us/azure/databricks/administration-guide/cloud-configurations/azure/vnet-peering#requirements

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