HDFS-3625. Fix TestBackupNode by properly initializing edit log during startup. Contributed by Junping Du.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1406740 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -1683,6 +1683,9 @@ Release 0.23.5 - UNRELEASED
     HDFS-4090. getFileChecksum() result incompatible when called against
     zero-byte files. (Kihwal Lee via daryn)
 
+    HDFS-3625. Fix TestBackupNode by properly initializing edit log during
+    startup. (Junping Du via todd)
+
 Release 0.23.4 - UNRELEASED
 
   INCOMPATIBLE CHANGES

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

@@ -354,6 +354,7 @@ public class BackupNode extends NameNode {
     } else {
       nsInfo.validateStorage(storage);
     }
+    bnImage.initEditLog();
     setRegistration();
     NamenodeRegistration nnReg = null;
     while(!isStopRequested()) {