jif da18000cae Measure rollout read and materialization durations (#45966) ...

## What changed

- Emit one read counter and duration observation per rollout reader, tagged by format, outcome, failure stage, and error kind. Distinguish EOF, partial reads, and failures, including failed opens.
- Accumulate time spent in completed open/retry and read calls, excluding caller processing and canceled calls, without exporting a metric for each JSONL record.
- Record materialization duration when decompressing a rollout for append, for both successful decompression and failures.

GitOrigin-RevId: 3d1e257863ffa696a63040172df54d8234d56ed5

2026-09-16 15:36:43 +00:00

..

src

Measure rollout read and materialization durations (#45966)

2026-09-16 15:36:43 +00:00

BUILD.bazel

Extract rollout into its own crate (#15548)

2026-03-24 18:10:53 -07:00

Cargo.toml

Extract persisted history types into a dedicated crate (#37871)

2026-08-10 19:26:52 +00:00