8341310: Test TestJcmdWithSideCar.java should skip ACCESS_TMP_VIA_PROC_ROOT (after JDK-8327114)

test/hotspot/jtreg/containers/docker/TestJcmdWithSideCar.java

@@ -247,13 +247,6 @@ static class MainContainer {
         };
 
         public Process start(final boolean elevated) throws Exception {
-            // Be sure no main container with the same name already exists
-            OutputAnalyzer out = DockerTestUtils.execute(Container.ENGINE_COMMAND, "ps")
-                .shouldHaveExitValue(0);
-            if (out.contains(MAIN_CONTAINER_NAME)) {
-                DockerTestUtils.execute(Container.ENGINE_COMMAND, "rm", MAIN_CONTAINER_NAME)
-                   .shouldHaveExitValue(0);
-            }
             // start "main" container (the observee)
             DockerRunOptions opts = commonDockerOpts("EventGeneratorLoop");
 
@@ -308,9 +301,6 @@ public void waitForAndCheck(long timeout) throws Exception {
             int retryCount = 3;
 
             do {
-                // Kill the process, so as to speed up overall time of the
-                // test
-                p.destroy();
                 waitFor(timeout);
                 try {
                     exitValue = p.exitValue();
@@ -320,6 +310,9 @@ public void waitForAndCheck(long timeout) throws Exception {
                 }
             } while (exitValue == -1 && retryCount > 0);
 
+            if (exitValue != 0) {
+                throw new RuntimeException("DockerThread stopped unexpectedly, non-zero exit value is " + exitValue);
+            }
         }
 
     }