Thread dump when smoke test container fails to start (#5593)

* Thread dump when smoke test contains fails to start

* trigger build

smoke-tests/src/test/java/io/opentelemetry/smoketest/LinuxTestContainerManager.java

@@ -5,6 +5,7 @@
 
 package io.opentelemetry.smoketest;
 
+import java.io.IOException;
 import java.time.Duration;
 import java.util.ArrayList;
 import java.util.List;
@@ -12,6 +13,8 @@ import java.util.Map;
 import java.util.function.Consumer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.testcontainers.containers.Container;
+import org.testcontainers.containers.ContainerLaunchException;
 import org.testcontainers.containers.GenericContainer;
 import org.testcontainers.containers.Network;
 import org.testcontainers.containers.output.OutputFrame;
@@ -22,6 +25,7 @@ import org.testcontainers.utility.DockerImageName;
 import org.testcontainers.utility.MountableFile;
 
 public class LinuxTestContainerManager extends AbstractTestContainerManager {
+  private static final Logger logger = LoggerFactory.getLogger(LinuxTestContainerManager.class);
   private static final Logger backendLogger = LoggerFactory.getLogger("Backend");
   private static final Logger appLogger = LoggerFactory.getLogger("App");
 
@@ -110,7 +114,24 @@ public class LinuxTestContainerManager extends AbstractTestContainerManager {
       target = target.withCommand(command);
     }
 
-    target.start();
+    try {
+      target.start();
+    } catch (ContainerLaunchException launchException) {
+      // when container failed to start try to force a thread dump
+      try {
+        Container.ExecResult execResult = target.execInContainer("killall", "-3", "java");
+        if (execResult.getExitCode() != 0) {
+          logger.warn("Command execution failed {}", execResult);
+        }
+      } catch (IOException exception) {
+        logger.warn("Command execution failed", exception);
+      } catch (InterruptedException exception) {
+        Thread.currentThread().interrupt();
+      }
+
+      throw launchException;
+    }
+
     return output;
   }