From 6301056ea20b30b341b8e16b09c6d1dd2cfe1b7b Mon Sep 17 00:00:00 2001
From: Aaron Abbott <aaronabbott@google.com>
Date: Mon, 7 Oct 2024 10:57:00 -0400
Subject: [PATCH] Mention that newer Log4j2 versions do not need additional
 fields (#379)

---
 .../instrumentation-quickstart/src/main/resources/log4j2.xml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/examples/instrumentation-quickstart/src/main/resources/log4j2.xml b/examples/instrumentation-quickstart/src/main/resources/log4j2.xml
index e1aedfd4..3f3d91e1 100644
--- a/examples/instrumentation-quickstart/src/main/resources/log4j2.xml
+++ b/examples/instrumentation-quickstart/src/main/resources/log4j2.xml
@@ -27,7 +27,10 @@
       https://logging.apache.org/log4j/2.x/manual/json-template-layout.html#event-templates -->
       <JsonTemplateLayout eventTemplateUri="classpath:GcpLayout.json">
         <!-- Extend the included GcpLayout to include the trace and span IDs from Mapped
-        Diagnostic Context (MDC) so that Cloud Logging can correlate Logs and Spans -->
+        Diagnostic Context (MDC) so that Cloud Logging can correlate Logs and Spans
+
+        Since log4j2 2.24.0, GcpLayout.json already includes trace context logging from MDC and
+        the below additional fields are no longer needed -->
         <EventTemplateAdditionalField
           key="logging.googleapis.com/trace"
           format="JSON"