HADOOP-9181. Set daemon flag for HttpServer's QueuedThreadPool (Liang Xie via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1432972 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -49,6 +49,9 @@ Release 0.23.6 - UNRELEASED
 
     HADOOP-9097. Maven RAT plugin is not checking all source files (tgraves)
 
+    HADOOP-9181. Set daemon flag for HttpServer's QueuedThreadPool (Liang 
+    Xie via tgraves)
+
 Release 0.23.5 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer.java

@@ -219,6 +219,7 @@ public class HttpServer implements FilterContainer {
     // default value (currently 250).
     QueuedThreadPool threadPool = maxThreads == -1 ?
         new QueuedThreadPool() : new QueuedThreadPool(maxThreads);
+    threadPool.setDaemon(true);
     webServer.setThreadPool(threadPool);
 
     final String appDir = getWebAppsPath(name);