HDFS-2675. Reduce warning verbosity when double-closing edit logs. Contributed by Todd Lipcon.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1214098 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -218,6 +218,9 @@ Release 0.23.1 - UNRELEASED
 
     HDFS-2654. Make BlockReaderLocal not extend RemoteBlockReader2. (eli)
 
+    HDFS-2675. Reduce warning verbosity when double-closing edit logs
+    (todd)
+
   OPTIMIZATIONS
 
     HDFS-2130. Switch default checksum to CRC32C. (todd)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLog.java

@@ -218,7 +218,7 @@ public class FSEditLog  {
    */
   synchronized void close() {
     if (state == State.CLOSED) {
-      LOG.warn("Closing log when already closed", new Exception());
+      LOG.debug("Closing log when already closed");
       return;
     }
     if (state == State.IN_SEGMENT) {