# Ray 2.3.1 — Ray-2.3.1

- Product: Ray (https://whatsnew.fyi/product/ray)
- Vendor: Anyscale
- Date: 2023-03-27
- Version: 2.3.1
- Original notes: https://github.com/ray-project/ray/releases/tag/ray-2.3.1
- Permalink: https://whatsnew.fyi/product/ray/releases/2.3.1

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Support different number of blocks/rows per block in zip()
- **changed** — Revert serve run to use Ray Client instead of Ray Jobs
- **fixed** — Fix issue with max_concurrent_queries being ignored when autoscaling
- **fixed** — Write Ray address even if Ray node is started with --block
- **fixed** — Fix Ray on Spark running on layered virtualenv python environment
- **fixed** — Fix disk metric showing double the actual value

The Ray 2.3.1 patch release contains fixes for multiple components:

##### Ray Data Processing
* Support different number of blocks/rows per block in `zip()` (https://github.com/ray-project/ray/pull/32795)

##### Ray Serve
* Revert `serve run` to use Ray Client instead of Ray Jobs (https://github.com/ray-project/ray/pull/32976)
* Fix issue with `max_concurrent_queries` being ignored when autoscaling (https://github.com/ray-project/ray/pull/32772 and https://github.com/ray-project/ray/pull/33022)
##### Ray Core
* Write Ray address even if Ray node is started with `--block` (https://github.com/ray-project/ray/pull/32961)
* Fix Ray on Spark running on layered virtualenv python environment (https://github.com/ray-project/ray/pull/32996)
##### Dashboard
* Fix disk metric showing double the actual value (https://github.com/ray-project/ray/pull/32674)