HDFS-4639. startFileInternal() should not increment generation stamp. Contributed by Plamen Jeliazkov.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1467534 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -503,6 +503,9 @@ Release 2.0.5-beta - UNRELEASED
 
     HDFS-4643. Fix flakiness in TestQuorumJournalManager. (todd)
 
+    HDFS-4639. startFileInternal() should not increment generation stamp.
+    (Plamen Jeliazkov via shv)
+
 Release 2.0.4-alpha - UNRELEASED
 
   INCOMPATIBLE CHANGES

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

@@ -235,8 +235,7 @@ public class FSDirectory implements Closeable {
                 long preferredBlockSize,
                 String clientName,
                 String clientMachine,
-                DatanodeDescriptor clientNode,
-                long generationStamp) 
+                DatanodeDescriptor clientNode)
     throws FileAlreadyExistsException, QuotaExceededException,
       UnresolvedLinkException {
     waitForReady();

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

@@ -1907,9 +1907,8 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
        checkFsObjectLimit();
 
         // increment global generation stamp
-        long genstamp = nextGenerationStamp();
         INodeFileUnderConstruction newNode = dir.addFile(src, permissions,
-            replication, blockSize, holder, clientMachine, clientNode, genstamp);
+            replication, blockSize, holder, clientMachine, clientNode);
         if (newNode == null) {
           throw new IOException("DIR* NameSystem.startFile: " +
                                 "Unable to add file to namespace.");

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSUpgrade.java

@@ -53,7 +53,7 @@ import com.google.common.base.Joiner;
 */
 public class TestDFSUpgrade {
  
-  private static final int EXPECTED_TXID = 49;
+  private static final int EXPECTED_TXID = 45;
   private static final Log LOG = LogFactory.getLog(TestDFSUpgrade.class.getName());
   private Configuration conf;
   private int testCounter = 0;

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestCheckpoint.java

@@ -1129,7 +1129,7 @@ public class TestCheckpoint {
         throw new IOException(e);
       }
       
-      final int EXPECTED_TXNS_FIRST_SEG = 12;
+      final int EXPECTED_TXNS_FIRST_SEG = 11;
       
       // the following steps should have happened:
       //   edits_inprogress_1 -> edits_1-12  (finalized)