cancel
Showing results for 
Search instead for 
Did you mean: 
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
Showing results for 
Search instead for 
Did you mean: 

Is it possible to write single Spark stream to 2 different Delta tables? Recommendations around that?

Anonymous
Not applicable
 
1 ACCEPTED SOLUTION

Accepted Solutions

Ryan_Chynoweth
Esteemed Contributor

In this scenario, the best option would be to have a single readStream reading a source delta table. Since checkpoint logs are controlled when writing to delta tables you would be able to maintain separate logs for each of your writeStreams.

I would recommend storing your checkpoint file in a `_checkpoint` sub-directory in your delta table directory. The "_" will allow spark to ignore it when reading the table and you are able to maintain those checkpoints with the appropriate tables.

View solution in original post

1 REPLY 1

Ryan_Chynoweth
Esteemed Contributor

In this scenario, the best option would be to have a single readStream reading a source delta table. Since checkpoint logs are controlled when writing to delta tables you would be able to maintain separate logs for each of your writeStreams.

I would recommend storing your checkpoint file in a `_checkpoint` sub-directory in your delta table directory. The "_" will allow spark to ignore it when reading the table and you are able to maintain those checkpoints with the appropriate tables.