Materialize/doc/user/content/releases/v0.50.md

---

title: "Materialize v0.50" date: 2023-04-12 released: true

patch: 3

v0.50.0

SQL

• Add mz_internal.mz_dataflow_arrangement_sizes to the system catalog. This view describes how many records and batches are contained in operators under each dataflow, which is useful to approximate how much memory a dataflow is using.

Bug fixes and other improvements

• Improve the usability of subscriptions when using the WITH (PROGRESS) option. Progress information is now guaranteed to include a progress message as the first update, indicating the AS OF time of the subscription. This helps distinguish between an empty snapshot and an "in-flight" snapshot.

• Improve the reliability of SSH tunnel connections when used with large cluster sizes, and add more verbose logging to make it easier to debug SSH connection errors during source and sink creation.

• Mitigate connection interruptions and ingestion hiccups for all connection types. If you observe ingestion lag in your sources or sinks, please get in touch!