From 90aa8cd0a7b215a844788b6d8aee133c2f330d9f Mon Sep 17 00:00:00 2001
From: Francesco Novy <francesco.novy@sentry.io>
Date: Thu, 10 Jul 2025 08:27:02 +0200
Subject: [PATCH 1/2] ref(node): Add
 `sentry.transaction.parent_span_already_sent` attribute

---
 packages/opentelemetry/src/spanExporter.ts         |  8 ++++++++
 .../test/integration/transactions.test.ts          | 14 ++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/packages/opentelemetry/src/spanExporter.ts b/packages/opentelemetry/src/spanExporter.ts
index 6430f0f23da5..a113d25222c7 100644
--- a/packages/opentelemetry/src/spanExporter.ts
+++ b/packages/opentelemetry/src/spanExporter.ts
@@ -191,6 +191,14 @@ export class SentrySpanExporter {
       sentSpans.add(span);
       const transactionEvent = createTransactionForOtelSpan(span);
 
+      // Add an attribute to the transaction event to indicate that this transaction is an orphaned transaction
+      if (root.parentNode && this._sentSpans.has(root.parentNode.id)) {
+        const traceData = transactionEvent.contexts?.trace?.data;
+        if (traceData) {
+          traceData['sentry.transaction.parent_span_already_sent'] = true;
+        }
+      }
+
       // We'll recursively add all the child spans to this array
       const spans = transactionEvent.spans || [];
 
diff --git a/packages/opentelemetry/test/integration/transactions.test.ts b/packages/opentelemetry/test/integration/transactions.test.ts
index 9bc1847b422b..128bac1bcdc4 100644
--- a/packages/opentelemetry/test/integration/transactions.test.ts
+++ b/packages/opentelemetry/test/integration/transactions.test.ts
@@ -612,6 +612,20 @@ describe('Integration | Transactions', () => {
     expect(transactions).toHaveLength(2);
     expect(transactions[0]?.spans).toHaveLength(1);
 
+    expect(transactions[0]?.transaction).toBe('test name');
+    expect(transactions[0]?.contexts?.trace?.data).toEqual({
+      'sentry.origin': 'manual',
+      'sentry.sample_rate': 1,
+      'sentry.source': 'custom',
+    });
+
+    expect(transactions[1]?.transaction).toBe('inner span 2');
+    expect(transactions[1]?.contexts?.trace?.data).toEqual({
+      'sentry.transaction.parent_span_already_sent': true,
+      'sentry.origin': 'manual',
+      'sentry.source': 'custom',
+    });
+
     const finishedSpans: any = exporter['_finishedSpanBuckets'].flatMap(bucket =>
       bucket ? Array.from(bucket.spans) : [],
     );

From 26a32b2a3a3bd1c148a639a35a116651151c2411 Mon Sep 17 00:00:00 2001
From: Francesco Novy <francesco.novy@sentry.io>
Date: Thu, 10 Jul 2025 08:30:37 +0200
Subject: [PATCH 2/2] drop transaction part

---
 packages/opentelemetry/src/spanExporter.ts                   | 2 +-
 packages/opentelemetry/test/integration/transactions.test.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/opentelemetry/src/spanExporter.ts b/packages/opentelemetry/src/spanExporter.ts
index a113d25222c7..3328b64c8230 100644
--- a/packages/opentelemetry/src/spanExporter.ts
+++ b/packages/opentelemetry/src/spanExporter.ts
@@ -195,7 +195,7 @@ export class SentrySpanExporter {
       if (root.parentNode && this._sentSpans.has(root.parentNode.id)) {
         const traceData = transactionEvent.contexts?.trace?.data;
         if (traceData) {
-          traceData['sentry.transaction.parent_span_already_sent'] = true;
+          traceData['sentry.parent_span_already_sent'] = true;
         }
       }
 
diff --git a/packages/opentelemetry/test/integration/transactions.test.ts b/packages/opentelemetry/test/integration/transactions.test.ts
index 128bac1bcdc4..c3cc9b0e8b7b 100644
--- a/packages/opentelemetry/test/integration/transactions.test.ts
+++ b/packages/opentelemetry/test/integration/transactions.test.ts
@@ -621,7 +621,7 @@ describe('Integration | Transactions', () => {
 
     expect(transactions[1]?.transaction).toBe('inner span 2');
     expect(transactions[1]?.contexts?.trace?.data).toEqual({
-      'sentry.transaction.parent_span_already_sent': true,
+      'sentry.parent_span_already_sent': true,
       'sentry.origin': 'manual',
       'sentry.source': 'custom',
     });