feat: Enable distributed tracing in greptimedb (#2755)

* feat: implement distributed tracing

* fix: change usage of span

* fix: use otlp as exporter

* chore: update dependence

* chore: add span info

* chore: add alias

* chore: use instrument instead of trace

Cargo.toml

@@ -85,7 +85,7 @@ derive_builder = "0.12"
 etcd-client = "0.12"
 futures = "0.3"
 futures-util = "0.3"
-greptime-proto = { git = "https://github.com/GreptimeTeam/greptime-proto.git", rev = "7eb2e78be7a104d2582fbea0bcb1e019407da702" }
+greptime-proto = { git = "https://github.com/GreptimeTeam/greptime-proto.git", rev = "25429306d0379ad29211a062a81da2554a0208ab" }
 humantime-serde = "1.1"
 itertools = "0.10"
 lazy_static = "1.4"

config/datanode.example.toml

@@ -109,9 +109,7 @@ vector_cache_size = "512MB"
 sst_write_buffer_size = "8MB"
 
 
-# Log options
+# Log options, see `standalone.example.toml`
 # [logging]
-# Specify logs directory.
 # dir = "/tmp/greptimedb/logs"
-# Specify the log level [info | debug | error | warn]
 # level = "info"

config/standalone.example.toml

@@ -158,3 +158,7 @@ global_write_buffer_size = "1GB"
 # dir = "/tmp/greptimedb/logs"
 # Specify the log level [info | debug | error | warn]
 # level = "info"
+# whether enable tracing, default is false
+# enable_otlp_tracing = false
+# tracing exporter endpoint with format `ip:port`, we use grpc oltp as exporter, default endpoint is `localhost:4317`
+# otlp_endpoint = "localhost:4317"

src/client/examples/logical.rs

@@ -78,7 +78,7 @@ async fn run() {
 
     let logical = mock_logical_plan();
     event!(Level::INFO, "plan size: {:#?}", logical.len());
-    let result = db.logical_plan(logical, 0).await.unwrap();
+    let result = db.logical_plan(logical).await.unwrap();
 
     event!(Level::INFO, "result: {:#?}", result);
 }