# Tenzir Node v5.35.1

This release restores correct retention for metrics and diagnostics in mixed-age partitions and brings back actionable TLS hints when ClickHouse connections fail due to a TLS/plaintext mismatch.

## 🐞 Bug Fixes

### ClickHouse TLS mismatch diagnostics

Apr 29, 2026 · [@mavam](https://github.com/mavam), [@codex](https://github.com/codex) · [#6098](https://github.com/tenzir/tenzir/pull/6098)

ClickHouse connection errors caused by TLS/plaintext mismatches now include the TLS notes and hint again. This helps identify when `to_clickhouse` is using TLS against a plaintext ClickHouse endpoint and suggests setting `tls=false` when appropriate.

### Retention for mixed-age metrics partitions

Apr 28, 2026 · [@tobim](https://github.com/tobim), [@codex](https://github.com/codex) · [#6086](https://github.com/tenzir/tenzir/pull/6086)

Default retention policies now continue deleting metrics and diagnostics as their timestamps age into the retention window, even when older and newer events share a partition.

Previously, a partition that still contained newer events after retention could be skipped by later retention runs, leaving those events behind after they expired.

[ Download on GitHub ](https://github.com/tenzir/tenzir/releases/tag/v5.35.1)

[Get the release artifacts and source code.](https://github.com/tenzir/tenzir/releases/tag/v5.35.1)