HDFS-2286. DataXceiverServer logs AsynchronousCloseException at shutdown. Contributed by Todd Lipcon.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1162004 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -992,6 +992,9 @@ Release 0.23.0 - Unreleased
     HDFS-1480. All replicas of a block can end up on the same rack when
     some datanodes are decommissioning. (todd)
 
+    HDFS-2286. DataXceiverServer logs AsynchronousCloseException at shutdown
+    (todd)
+
   BREAKDOWN OF HDFS-1073 SUBTASKS
 
     HDFS-1521. Persist transaction ID on disk between NN restarts.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataXceiverServer.java

@@ -21,6 +21,7 @@ import java.io.IOException;
 import java.net.ServerSocket;
 import java.net.Socket;
 import java.net.SocketTimeoutException;
+import java.nio.channels.AsynchronousCloseException;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -144,6 +145,12 @@ class DataXceiverServer implements Runnable {
         new Daemon(datanode.threadGroup, exciver).start();
       } catch (SocketTimeoutException ignored) {
         // wake up to see if should continue to run
+      } catch (AsynchronousCloseException ace) {
+        // another thread closed our listener socket - that's expected during shutdown,
+        // but not in other circumstances
+        if (datanode.shouldRun) {
+          LOG.warn(datanode.getMachineName() + ":DataXceiverServer: ", ace);
+        }
       } catch (IOException ie) {
         LOG.warn(datanode.getMachineName() + ":DataXceiverServer: ", ie);
       } catch (Throwable te) {