cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
Help
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.
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

Start a conversation
Data_Engineer3
by • Contributor III
  • 3440 Views
  • 5 replies
  • 0 kudos

Default maximum spark streaming chunk size in delta files in each batch?

working with delta files spark structure streaming , what is the maximum default chunk size in each batch?How do identify this type of spark configuration in databricks?#[Databricks SQL]​ #[Spark streaming]​ #[Spark structured streaming]​ #Spark​ 

Data Engineering
Reply
  • 3440 Views
  • 5 replies
  • 0 kudos
View Replies
Latest Reply
NandiniN
Databricks Employee
  • 0 kudos

doc - https://docs.databricks.com/en/structured-streaming/delta-lake.html  Also, what is the challenge while using foreachbatch?

  • 0 kudos
4 More Replies
thushar
by • Contributor
  • 4000 Views
  • 4 replies
  • 0 kudos

Delta file partitions

Have one function to create files with partitions, in that the partitions are created based on metadata (getPartitionColumns) that we are keeping. In a table we have two columns that are mentioned as partition columns, say 'Team' and 'Speciality'. Wh...

Data Engineering
Reply
  • 4000 Views
  • 4 replies
  • 0 kudos
View Replies
Latest Reply
Anonymous
Not applicable
  • 0 kudos

Hi @Thushar R​ Hope everything is going great.Just wanted to check in if you were able to resolve your issue. If yes, would you be happy to mark an answer as best so that other members can find the solution more quickly? If not, please tell us so we ...

  • 0 kudos
3 More Replies
mickniz
by • Contributor
  • 4341 Views
  • 6 replies
  • 10 kudos

What is the best way to take care of Drop and Rename a column in Schema evaluation.

I would need some suggestion from DataBricks Folks. As per documentation in Schema Evaluation for Drop and Rename Data is overwritten. Does it means we loose data (because I read data is not deleted but kind of staged). Is it possible to query old da...

Data Engineering
Reply
  • 4341 Views
  • 6 replies
  • 10 kudos
View Replies
Latest Reply
SS2
Valued Contributor
  • 10 kudos

Overwritte ​option will overwritte your data. If you want to change column name then you can first alter the delta table as per your need then you can append new data as well. So both problems you can resolve

  • 10 kudos
5 More Replies
Justine_Bieber
by • New Contributor III
  • 3802 Views
  • 5 replies
  • 8 kudos

Resolved! Change schema when writing to the Delta format

Is it possible to reapply schema in delta files? For example, we have a history with field string but from some point, we need to replace string with struct.In my case merge option and overwrite schema don't work.

Data Engineering
Reply
  • 3802 Views
  • 5 replies
  • 8 kudos
View Replies
Latest Reply
Justine_Bieber
New Contributor III
  • 8 kudos

Hi guys! Definitely, thank you for your support.

  • 8 kudos
4 More Replies
a2_ish
by • New Contributor II
  • 1666 Views
  • 2 replies
  • 2 kudos

How to write the delta files for managed table? how can I define the sink

I have tried below code to write data in a delta table and save the delta files in a sink. I tried using azure storage as sink but I get error as not enough access, I can confirm that I have enough access to azure storage, however I can run the below...

Data Engineering
Reply
  • 1666 Views
  • 2 replies
  • 2 kudos
View Replies
Latest Reply
Anonymous
Not applicable
  • 2 kudos

Hi @Ankit Kumar​ Does @Hubert Dudek​  response answer your question? If yes, would you be happy to mark it as best so that other members can find the solution more quickly?We'd love to hear from you.Thanks!

  • 2 kudos
1 More Replies
HarshaK
by • New Contributor III
  • 14727 Views
  • 4 replies
  • 6 kudos

Resolved! Partition By () on Delta Files

Hi All,I am trying to Partition By () on Delta file in pyspark language and using command:df.write.format("delta").mode("overwrite").option("overwriteSchema","true").partitionBy("Partition Column").save("Partition file path") -- It doesnt seems to w...

Data Engineering
Reply
  • 14727 Views
  • 4 replies
  • 6 kudos
View Replies
Latest Reply
Anonymous
Not applicable
  • 6 kudos

Hey @Harsha kriplani​ Hope you are well. Thank you for posting in here. It is awesome that you found a solution. Would you like to mark Hubert's answer as best?  It would be really helpful for the other members too.Cheers!

  • 6 kudos
3 More Replies
Labels