# Delta Lake

5 Hacker News commenters recommended Delta Lake and 3 criticized it, November 2025 to November 2026. It was recommended in 4 of 13 months.

**Verdict:** Open-source table format for data lakes, valued for compaction, parallel writers and space savings.

## Why people recommend it

- Often listed alongside Iceberg and DuckLake (2 comments): "I feel like this is what delta lake and ducklake are largely solving for. And then some." ([source](https://news.ycombinator.com/item?id=48003197)) "Delta, Iceberg should be in the list" ([source](https://news.ycombinator.com/item?id=47012654))
- Multiple manifests and compaction design (1 comments): "I'd again point to DeltaLake for the "good" design here, which is to have multiple manifests and compaction, which also unlocks parallel writers." ([source](https://news.ycombinator.com/item?id=47137351))
- Large space savings (1 comments): "getting a fuck ton of more space savings" ([source](https://news.ycombinator.com/item?id=48547430))

## Alternatives hackers recommend

- [DuckLake](https://hackerapproved.com/p/ducklake.md): 36 recommend
- [Apache Iceberg](https://hackerapproved.com/p/apache-iceberg.md): 26 recommend

## Cite as

Hacker Approved, "Delta Lake", https://hackerapproved.com/p/delta-lake/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).