apache / apache/hop

[Feature Request]: Add support for Delta Lake

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#3,941 0 comments 0 reactions 0 assignees View on GitHub
awaiting triage P3 Transforms
Dominant language
Java
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Description

### What would you like to happen?

Using the new standalone driver of Databricks, it should be possible to support both reading and writing data to Delta Lake.

https://docs.delta.io/latest/delta-standalone.html

We can add Databricks server metadata to allow us to automatically configure the Hadoop Configuration objects with respect to connectivity. This might also be helpful for issue #2639 (DBFS).

The trick will be to re-use code and functionality of our Parquet Writer transform to avoid code duplication.

### Issue Priority

Priority: 3

### Issue Component

Component: Transforms

Contributor guide

Open the contributing guide

Research direction

Start with the Delta Standalone documentation and inspect the existing Parquet Writer transform for reusable functionality. Define how reading and writing Delta Lake data and Databricks server metadata should configure Hadoop connectivity; done means both directions are supported without duplicating the Parquet Writer implementation.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data-engineering
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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