1 files changed, 6 insertions, 0 deletions
diff --git a/spark-common/src/main/proto/spark/spark_sampler.proto b/spark-common/src/main/proto/spark/spark_sampler.proto
index 10cc6d1..bd48e7d 100644
--- a/spark-common/src/main/proto/spark/spark_sampler.proto
+++ b/spark-common/src/main/proto/spark/spark_sampler.proto
@@ -34,6 +34,7 @@ message SamplerMetadata {
   map<string, PluginOrModMetadata> sources = 13;
   map<string, string> extra_platform_metadata = 14;
   SamplerMode sampler_mode = 15;
+  SamplerEngine sampler_engine = 16;
 
   message ThreadDumper {
     Type type = 1;
@@ -69,6 +70,11 @@ message SamplerMetadata {
     EXECUTION = 0;
     ALLOCATION = 1;
   }
+
+  enum SamplerEngine {
+    JAVA = 0;
+    ASYNC = 1;
+  }
 }
 
 message ThreadNode {