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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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shamly
by • New Contributor III
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spark exception error while reading a parquet file

when I try to read parquet file from Azure datalake container from databricks, I am getting spark exception. Below is my queryimport pyarrow.parquet as pqfrom pyspark.sql.functions import *from datetime import datetimedata = spark.read.parquet(f"/mnt...

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DavideAnghileri
Contributor
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Hi @shamly pt​ , more info are needed to solve the issue. However common problems are:The storage is not mountThat file doesn't exists in the mounted storageAlso, there is no need to use an f-string if there are no curly brackets with expressions in ...

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db-avengers2rul
by • Contributor II
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Code snippet error from course - Databricks Academy - Delta Lake Rapid Start with Python

Dear Team,While i was doing hands on practice from the course - Delta Lake Rapid Start with Pythonhttps://customer-academy.databricks.com/learn/course/97/delta-lake-rapid-start-with-pythoni have come across false as the output dbutils.fs.rm(health_t...

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Anonymous
Not applicable
  • 18 kudos

Could you give more description about your issue (screenshot or something). Hope to help you find the issue?

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rajat1
by • New Contributor
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How to convert dataframe (df), to a excel file that I can share with my colleagues ?

I am working on microsoft azure databrick, I have a final dataframe of shape (3276*23) , I want to share it in form of excel file? How can I do it ( I am using ->df.to_excel('fileOutput.xlsx', sheet_name = 'Sheet1', index = False) , command is runn...

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Anonymous
Not applicable
  • 1 kudos

You could try this way, convert Pyspark Dataframe to Pandas Dataframe then export to excel file.

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LPlates
by • New Contributor III
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Resolved! How do you read an Excel spreadsheet with Databricks

My cluster has Scala 2.12I've installed Maven Library com.crealytics:spark-excel_2.12:0.14.0I get an error java.lang.IllegalStateException: Cannot get a STRING value from a NUMERIC cellwhen trying to execute the following%pythonexcelFileName="/mnt/dl...

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Anonymous
Not applicable
  • 1 kudos

Another way also help for your case is usign Pandas to read excel then convert Pandas Dataframe to Pyspark Dataframe

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JanakaNaw
by • New Contributor II
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Resolved! Databricks Certified Data Engineer Associate Certificate or Badge not received

Hello, I passed Databricks Certified Data Engineer Associate on 28th October 2022, but I haven't received my certificate/badge yet. Please help me with this. Best Regards,Janaka Nawarathna.

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Anonymous
Not applicable
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Have you received your badge?

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Ryan_Chynoweth
by • Esteemed Contributor
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Resolved! Best language to use

Databricks supports SQL, Scala, Python, and R. Is there a most performant language to use on Databricks? I know SQL well but would like to get into one of the other languages and don't know which to focus on.

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Anonymous
Not applicable
  • 7 kudos

It total depends on you? BTW, you can choose Python and SQL

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NOOR_BASHASHAIK
by • Contributor
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Databricks SQL endpoint authentication

Hi all​I have a requirement that goes like this:Users from a particular software that doesn't have out-of-the-box integration with Databricks click on a dashboard, the button click then sends an SQL query​ to Databricks (user gets authenticated in Da...

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Ruby8376
by • Valued Contributor
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Tableau analytics integration with databricks delta lake

Hii there!!Currently, we are exploring options for reporting on Salesforce. We extract data from salesforce via databricks and store it in delta lake.Is there a connector by which data can be pulled from databricks into Tableau/CRM analytics??I know ...

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wyzer
by • Contributor II
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Resolved! Add the creation date of a parquet file into a DataFrame

Currently I load multiple parquet file with this code:df = spark.read.parquet("/mnt/dev/bronze/Voucher/*/*")(Inside the Voucher folder, there is one folder by date. Each one containing one parquet file)How can I add a column into this DataFrame, that...

Data Engineering
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wyzer
Contributor II
  • 12 kudos

Thanks @Michail Karamanos​ 

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AnubhavG
by • Contributor
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  • 18 kudos

Resolved! External KMS integration with Databricks like AWS KMS, Azure Key Vault.

I would like to know how we can integrate Databricks with External KMS providers, like currently it is doing with AWS KMS and Azure Key Valut?Can we import keys from any other KMS?

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Vivian_Wilfred
Honored Contributor
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@Anubhav Gupta​ Databricks is hosted on the cloud provider which means that all resources used by databricks in the backend are in the cloud. For instance, if you create a cluster, the VMs are launched in AWS as EC2 instances. So the integration of K...

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rgb
by • New Contributor
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Migration_pipeline.py failing to get default credentials

cat ~/.databrickscfg looks like this (with the correct token/host values in place of xxxxxx)[DEFAULT]host = xxxxxxtoken = xxxxxxjobs-api-version = 2.0The command I run to start the pipeline with default configured credentials is :sudo python3 migrati...

databrickserror
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693872
by • New Contributor II
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Here I am getting this error when i execute left join on two data frame: PythonException: 'pyspark.serializers.SerializationError: Caused by Traceback (most recent call last): going to post full traceback:

I simply do left join on two data frame and both data frame content i was able to print.Here is the code looks like:-df_silver = spark.sql("select ds.PropertyID,\              ds.*             from dfsilver as ds LEFT JOIN dfaddmaster as dm \        ...

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Dooley
Valued Contributor II
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Did that answer your question? Did it work?

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