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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

diguid
by New Contributor III
  • 3549 Views
  • 3 replies
  • 13 kudos

Using foreachBatch within Delta Live Tables framework

Hey there!​I was wondering if there's any way of declaring a delta live table where we use foreachBatch to process the output of a streaming query.​Here's a simplification of my code:​def join_data(df_1, df_2): df_joined = ( df_1 ...

  • 3549 Views
  • 3 replies
  • 13 kudos
Latest Reply
cgrant
Databricks Employee
  • 13 kudos

foreachBatch support in DLT is coming soon, and you now have the ability to write to non-DLT sinks as well

  • 13 kudos
2 More Replies
Deepak_Goldwyn
by New Contributor III
  • 6522 Views
  • 5 replies
  • 2 kudos

Resolved! Create Jobs and Pipelines in Workflows using API

I am trying to create Databricks Jobs and Delta live table(DLT) pipelines by using Databricks API.I would like to have the JSON code of Jobs and DLT in the repository(to configure the code as per environment) and execute the Databricks API by passing...

  • 6522 Views
  • 5 replies
  • 2 kudos
Latest Reply
Deepak_Goldwyn
New Contributor III
  • 2 kudos

Hi Jose,Yes it answered my question. I am indeed using JSON file to create Jobs and pipelinesThanks.

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4 More Replies
SRK
by Contributor III
  • 3765 Views
  • 5 replies
  • 7 kudos

How to handle schema validation for Json file. Using Databricks Autoloader?

Following are the details of the requirement:1.      I am using databricks notebook to read data from Kafka topic and writing into ADLS Gen2 container i.e., my landing layer.2.      I am using Spark code to read data from Kafka and write into landing...

  • 3765 Views
  • 5 replies
  • 7 kudos
Latest Reply
maddy08
New Contributor II
  • 7 kudos

just to clarify, are you reading kafka and writing into adls in json files? like for each message from kafka is 1 json file in adls ?

  • 7 kudos
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MadelynM
by Databricks Employee
  • 9588 Views
  • 2 replies
  • 0 kudos

Delta Live Tables + S3 | 5 tips for cloud storage with DLT

You’ve gotten familiar with Delta Live Tables (DLT) via the quickstart and getting started guide. Now it’s time to tackle creating a DLT data pipeline for your cloud storage–with one line of code. Here’s how it’ll look when you're starting:CREATE OR ...

Workflows-Left Nav Workflows
  • 9588 Views
  • 2 replies
  • 0 kudos
Latest Reply
waynelxb
New Contributor II
  • 0 kudos

Hi MadelynM,How should we handle Source File Archival and Data Retention with DLT? Source File Archival: Once the data from source file is loaded with DLT Auto Loader, we want to move the source file from source folder to archival folder. How can we ...

  • 0 kudos
1 More Replies
PearceR
by New Contributor III
  • 13518 Views
  • 4 replies
  • 1 kudos

Resolved! custom upsert for delta live tables apply_changes()

Hello community :).I am currently implementing some pipelines using DLT. They are working great for my medalion architecture for landed json in bronze -> silver (using apply_changes) then materialized gold views ontop.However, I am attempting to crea...

  • 13518 Views
  • 4 replies
  • 1 kudos
Latest Reply
Harsh141220
New Contributor II
  • 1 kudos

Is it possible to have custom upserts for streaming tables in delta live tables?Im getting the error:pyspark.errors.exceptions.captured.AnalysisException: `blusmart_poc.information_schema.sessions` is not a Delta table.

  • 1 kudos
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Valentin1
by New Contributor III
  • 8493 Views
  • 6 replies
  • 3 kudos

Delta Live Tables Incremental Batch Loads & Failure Recovery

Hello Databricks community,I'm working on a pipeline and would like to implement a common use case using Delta Live Tables. The pipeline should include the following steps:Incrementally load data from Table A as a batch.If the pipeline has previously...

  • 8493 Views
  • 6 replies
  • 3 kudos
Latest Reply
lprevost
Contributor II
  • 3 kudos

I totally agree that this is a gap in the Databricks solution.  This gap exists between a static read and real time streaming.   My problem (and suspect there are many use cases) is that I have slowly changing data coming into structured folders via ...

  • 3 kudos
5 More Replies
sarguido
by New Contributor II
  • 3983 Views
  • 5 replies
  • 2 kudos

Delta Live Tables: bulk import of historical data?

Hello! I'm very new to working with Delta Live Tables and I'm having some issues. I'm trying to import a large amount of historical data into DLT. However letting the DLT pipeline run forever doesn't work with the database we're trying to import from...

  • 3983 Views
  • 5 replies
  • 2 kudos
Latest Reply
Anonymous
Not applicable
  • 2 kudos

Hi @Sarah Guido​ Thank you for posting your question in our community! We are happy to assist you.To help us provide you with the most accurate information, could you please take a moment to review the responses and select the one that best answers y...

  • 2 kudos
4 More Replies
jfvizoso
by New Contributor II
  • 10197 Views
  • 4 replies
  • 0 kudos

Can I pass parameters to a Delta Live Table pipeline at running time?

I need to execute a DLT pipeline from a Job, and I would like to know if there is any way of passing a parameter. I know you can have settings in the pipeline that you use in the DLT notebook, but it seems you can only assign values to them when crea...

  • 10197 Views
  • 4 replies
  • 0 kudos
Latest Reply
lprevost
Contributor II
  • 0 kudos

This seems to be the key to this question:parameterize for dlt  My understanding of this is that you can add the parameter either in the DLT settings UI via Advanced Config/Add Configuration, key, value dialog.   Or via the corresponding pipeline set...

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3 More Replies
Phani1
by Valued Contributor II
  • 9155 Views
  • 5 replies
  • 0 kudos

Data Quality in Databricks

Hi Databricks Team, would like to implement data quality rules in Databricks, apart from DLT do we have any standard approach to perform/ apply data quality rules on bronze layer before further proceeding to silver and gold layer.

  • 9155 Views
  • 5 replies
  • 0 kudos
Latest Reply
joarobles
New Contributor III
  • 0 kudos

Looks nice! However I don't see Databricks support in the docs

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amartinez
by New Contributor III
  • 4838 Views
  • 6 replies
  • 5 kudos

Workaround for GraphFrames not working on Delta Live Table?

According to this page, the GraphFrames package is included in the databricks runtime since at least 11.0. However trying to run a connected components algorithm inside a delta live table notebook yields the error java.lang.ClassNotFoundException: or...

  • 4838 Views
  • 6 replies
  • 5 kudos
Latest Reply
lprevost
Contributor II
  • 5 kudos

I'm also trying to use GraphFrames inside a DLT pipeline.   I get an error that graphframes not installed in the cluster.   i"m using it successfully in test notebooks using the ML version of the cluster.  Is there a way to use this inside a DLT job?

  • 5 kudos
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Yash_542965
by New Contributor II
  • 1593 Views
  • 1 replies
  • 0 kudos

DLT aggregation problem

I'm utilizing SQL to perform aggregation operations within a gold layer of a DLT pipeline. However, I'm encountering an error when running the pipeline while attempting to return a data frame using spark.sql.Could anyone please assist me with the SQL...

  • 1593 Views
  • 1 replies
  • 0 kudos
Latest Reply
lucasrocha
Databricks Employee
  • 0 kudos

Hello @Yash_542965 , I hope this message finds you well. Could you please share a sample of code you are using so that we can check it further? Best regards,Lucas Rocha

  • 0 kudos
User16752244127
by Contributor
  • 1067 Views
  • 1 replies
  • 0 kudos
  • 1067 Views
  • 1 replies
  • 0 kudos
Latest Reply
lucasrocha
Databricks Employee
  • 0 kudos

Hello @User16752244127 , I hope this message finds you well. Delta Live Tables supports loading data from any data source supported by Databricks. You can find the datasources supported here Connect to data sources, and JDBC is one of them. You can a...

  • 0 kudos
kskistad
by New Contributor III
  • 6088 Views
  • 2 replies
  • 4 kudos

Resolved! Streaming Delta Live Tables

I'm a little confused about how streaming works with DLT. My first questions is what is the difference in behavior if you set the pipeline mode to "Continuous" but in your notebook you don't use the "streaming" prefix on table statements, and simila...

  • 6088 Views
  • 2 replies
  • 4 kudos
Latest Reply
Harsh141220
New Contributor II
  • 4 kudos

Is it possible to have custom upserts in streaming tables in a delta live tables pipeline?Use case: I am trying to maintain a valid session based on timestamp column and want to upsert to the target table.Tried going through the documentations but dl...

  • 4 kudos
1 More Replies
daz
by New Contributor III
  • 7142 Views
  • 9 replies
  • 3 kudos

DLT managed by non-existent pipeline

I am building out a new DLT pipeline and have since had to rebuild it from scratch. Having deleted the old pipeline and constructed a new one I now get this error:Table 'X' is already managed by pipeline 'Y'. As I only have the one pipeline how would...

  • 7142 Views
  • 9 replies
  • 3 kudos
Latest Reply
Shinaider777
New Contributor II
  • 3 kudos

rename your function from @Dlt.table, for exemple:@Dlt.table(    comment="exemple",    table_properties={"exemple": "exemple"},    partition_cols=["a", "b", "c"])def modify_this_name():

  • 3 kudos
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isaac_gritz
by Databricks Employee
  • 8272 Views
  • 1 replies
  • 2 kudos

Change Data Capture with Databricks

How to leverage Change Data Capture (CDC) from your databases to DatabricksChange Data Capture allows you to ingest and process only changed records from database systems to dramatically reduce data processing costs and enable real-time use cases suc...

  • 8272 Views
  • 1 replies
  • 2 kudos
Latest Reply
prasad95
New Contributor III
  • 2 kudos

Hi, @isaac_gritz can you provide any reference resource to achieve the AWS DynamoDB CDC to Delta Tables.Thank You,

  • 2 kudos
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