Merge branch 'preallocate-attribute-mem' of github.com:lalitb/opentelemetry-rust into preallocate-attribute-mem

Author: lalitb

opentelemetry-sdk/CHANGELOG.md

@@ -4,6 +4,10 @@
 
 - `opentelemetry_sdk::logs::record::LogRecord` and `opentelemetry_sdk::logs::record::TraceContext` derive from `PartialEq` to facilitate Unit Testing.
 - Fixed an issue causing a panic during shutdown when using the `TokioCurrentThread` tracing batch processor.
+  [#1964](https://github.com/open-telemetry/opentelemetry-rust/pull/1964)
+- Fix BatchSpanProcessor to trigger first export at the first interval
+  instead of doing it right away.
+  [#1970](https://github.com/open-telemetry/opentelemetry-rust/pull/1970)
 
 ## v0.24.1
 

opentelemetry-sdk/src/trace/span_processor.rs

@@ -457,6 +457,7 @@ impl<R: RuntimeChannel> BatchSpanProcessor<R> {
             // runtime.spawn()
             let ticker = inner_runtime
                 .interval(config.scheduled_delay)
+                .skip(1) // The ticker is fired immediately, so we should skip the first one to align with the interval.
                 .map(|_| BatchMessage::Flush(None));
             let timeout_runtime = inner_runtime.clone();