LFC

system tables for inner metrics

8

### What problem does the new feature solve? It's good to have a metrics table like the one in [Databend](https://databend.rs/doc/sql-reference/system-tables/system-metrics) or [ClickHouse](https://clickhouse.com/docs/en/operations/system-tables/metrics/). Users can easily "select" on the metrics table...

supports write in MQTT protocol

2

### What problem does the new feature solve? MQTT protocol is very important in IOT industry, we should support it. ref: - https://mqtt.org/ ### What does the feature do? Insert...

### What problem does the new feature solve? Our db's grpc service lacks of a Golang SDK. ### What does the feature do? A Golang SDK for our grpc service....

### What problem does the new feature solve? Our db's grpc service lacks of a Rust SDK. ### What does the feature do? A Rust SDK for our grpc service....

### What problem does the new feature solve? GreptimeDB lacks the session layer, which then makes tracking client's status/quotas impossible. ### What does the feature do? Adds a session layer...

### What type of enhancement is this? Refactor, Tech debt reduction ### What does the enhancement do? Refactor Frontend's inner interface to make codes looked more clear. ### Implementation challenges...

Add healthy check for GreptimeDB

2

### What type of enhancement is this? API improvement ### What does the enhancement do? It's important for cloud monitoring components to explicitly check the healthy of datanode and frontend...

fix: `test_dist_table_scan` block

1

I hereby agree to the terms of the [GreptimeDB CLA](https://gist.github.com/xtang/6378857777706e568c1949c7578592cc) ## What's changed and what's your intention? `test_dist_table_scan` could be blocking for multiple reasons: 1. the tasks that were producing...

### What type of enhancement is this? API improvement ### What does the enhancement do? Support "use" stmt in mysql. It's required when clients use jdbc. ### Implementation challenges -...

**Describe the bug** Unable to build grpc-rs on the latest windows 11. Here's the error logs: (from cargo build) ```txt PS D:\repo\grpc-rs\grpc-sys> cargo build warning: patch for `grpcio-compiler` uses the...