greptimedb

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Lei, HUANG 42aa58aa27 feat: support env vars in heartbeat (#8064 )

* feat: support reporting env vars in heartbeat messages to metasrv

Add `heartbeat_env_vars` config option for datanode and frontend. When
configured, the specified environment variable values are read at startup
and sent to metasrv in every heartbeat via the `extensions` map. Metasrv
extracts and stores them in `NodeInfo` for use in routing decisions
(e.g. AZ-aware region placement).

- Add `EnvVars` helper in `common/meta/src/datanode.rs` following the
  existing `GcStat` extension pattern with `into_extensions`/`from_extensions`
- Add `env_vars: HashMap<String, String>` field to `NodeInfo` in
  `common/meta/src/cluster.rs` with `#[serde(default)]` for backward compat
- Add `heartbeat_env_vars: Vec<String>` config field to `DatanodeOptions`,
  `FrontendOptions`, and `StandaloneOptions`
- Inject env vars into heartbeat `extensions` in both datanode and frontend
  heartbeat tasks (`datanode/src/heartbeat.rs`, `frontend/src/heartbeat.rs`)
- Extract env vars from `req.extensions` in all three metasrv
  `CollectXxxClusterInfoHandler`s
- Update `NodeInfo` construction sites in `meta-client`,
  `discovery/lease.rs`, and `standalone/information_extension.rs`
- Update expected TOML output in `tests-integration/tests/http.rs`
- Add unit tests for `EnvVars` round-trip and `NodeInfo` backward compat

Signed-off-by: Lei, HUANG <leih@nvidia.com>
Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* refactor: address heartbeat env review feedback

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* chore: log error on deserialization failure

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* refactor: send heartbeat env vars once

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* fix: resend heartbeat env vars after reconnect

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* revert: keep env vars in every heartbeat

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

---------

Signed-off-by: Lei, HUANG <leih@nvidia.com>
Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

2026-05-08 07:37:53 +00:00

grpc.rs

feat!: memory limiter unification write path (#7437 )

2025-12-23 02:18:49 +00:00

http.rs

feat: support env vars in heartbeat (#8064 )

2026-05-08 07:37:53 +00:00

jsonbench.rs

feat: introducing "JSON2" type (#7965 )

2026-04-15 03:38:01 +00:00

main.rs

fix: mysql prepare correctly returns error instead of panic (#7963 )