LoginSign Up
← Back to all sparks
D

Delta Lake

ANALYTICS
Velocity5.0

Open table format bringing ACID transactions to data lakes

delta.io ↗

Delta Lake's public stream is release mechanics; Kernel builds now carry a 4.5.0 label.

lakehousedata-correctnessdelta-kernelpatch-releases
◆Current state
Recent Delta Lake activity is mostly release mechanics: 4.4.0 and 4.4.1 tags, a stream of Databricks runtime kernel builds, and patch releases. The newest build is labelled Delta Kernel 4.5.0, the first sign of the next minor line. The substantive user-facing work sits in patches such as the 3.3.3 fix for log cleanup deleting files still needed for time travel.
◆Where it's heading
The project keeps 3.x and 4.x alive and spends its public changelog on correctness and catalog integration rather than new table features. Kernel builds tagged for Databricks runtime suggest Kernel development is paced by Databricks' own release train, with the open-source releases following.
◆Prediction
A 4.5.0 open-source release is the likely next notable entry given the kernel version label, but the entries don't say what it will contain.

◆Recent moves

  1. 16d ago

    Delta Kernel 4.5.0 Databricks runtime build

    Another internal Databricks runtime kernel build with no notes, notable only because it is versioned 4.5.0. It points to the next minor line being in preparation without saying what it adds.

    View source ↗
  2. 29d ago

    Delta Lake 4.4.1 patch release tagged

    A version bump to cut the 4.4.1 artifacts, with no runtime changes described. Release plumbing on the 4.x line.

    View source ↗
  3. 1mo ago

    Internal Databricks runtime kernel build

    Another internal Databricks runtime kernel build. Not relevant to open-source users.

    View source ↗
  4. 2mo ago

    Delta Lake 4.4.0 released

    The 4.4.0 minor release is tagged; the entry covers release tooling, not features. It marks the current 4.x baseline that 4.4.1 patches.

    View source ↗
  5. 2mo ago

    Delta Lake 3.3.3

    The most consequential fix in the window: metadata cleanup could delete log files still inside the retention window, which broke time travel and CDF reads. It also fixes Delta Sharing deletion-vector caching, but ships without delta-iceberg.

    View source ↗
  6. 3mo ago

    Internal Databricks runtime kernel build

    Internal Databricks runtime kernel build; no user-facing change.

    View source ↗