From a17238454d15f678f1ffbdd88f5b5b02ab7d6073 Mon Sep 17 00:00:00 2001
From: Jean Bisutti <jean.bisutti@gmail.com>
Date: Mon, 23 Oct 2023 23:38:58 +0200
Subject: [PATCH] Add volatile to the Logback OpenTelemetry appender (#9748)

---
 .../logback/appender/v1_0/OpenTelemetryAppender.java            | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/instrumentation/logback/logback-appender-1.0/library/src/main/java/io/opentelemetry/instrumentation/logback/appender/v1_0/OpenTelemetryAppender.java b/instrumentation/logback/logback-appender-1.0/library/src/main/java/io/opentelemetry/instrumentation/logback/appender/v1_0/OpenTelemetryAppender.java
index b39e5b6d72..17ff5d16a4 100644
--- a/instrumentation/logback/logback-appender-1.0/library/src/main/java/io/opentelemetry/instrumentation/logback/appender/v1_0/OpenTelemetryAppender.java
+++ b/instrumentation/logback/logback-appender-1.0/library/src/main/java/io/opentelemetry/instrumentation/logback/appender/v1_0/OpenTelemetryAppender.java
@@ -27,7 +27,7 @@ public class OpenTelemetryAppender extends UnsynchronizedAppenderBase<ILoggingEv
   private boolean captureKeyValuePairAttributes = false;
   private List<String> captureMdcAttributes = emptyList();
 
-  private OpenTelemetry openTelemetry;
+  private volatile OpenTelemetry openTelemetry;
   private LoggingEventMapper mapper;
 
   public OpenTelemetryAppender() {}