addressed PR feedback

Author: bachuv

CHANGELOG.md

@@ -1,5 +1,5 @@
 ## v1.5.2
-* Add tracing support to send information to the WebJobs extension ([#211](https://github.com/microsoft/durabletask-java/pull/211))
+* Add tracing support for Azure Functions client scenarios ([#211](https://github.com/microsoft/durabletask-java/pull/211))
 
 ## v1.5.1
 * Improve logging for unexpected connection failures in DurableTaskGrpcWorker ([#216](https://github.com/microsoft/durabletask-java/pull/216/files))

client/src/main/java/com/microsoft/durabletask/DurableTaskGrpcClient.java

@@ -17,6 +17,7 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 import java.util.logging.Logger;
+import java.util.stream.Collectors;
 
 import io.opentelemetry.api.trace.Span;
 import io.opentelemetry.api.trace.SpanContext;
@@ -129,7 +130,11 @@ public String scheduleNewOrchestrationInstance(
             );
 
             // Get the tracestate
-            traceState = spanContext.getTraceState().toString();
+            traceState = spanContext.getTraceState().asMap()
+                .entrySet()
+                .stream()
+                .map(entry -> entry.getKey() + "=" + entry.getValue())
+                .collect(Collectors.joining(","));
         }
 
         if (traceParent != null) {