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From vinayakum...@apache.org
Subject hadoop git commit: HDFS-7714. Simultaneous restart of HA NameNodes and DataNode can cause DataNode to register successfully with only one NameNode.(Contributed by Vinayakumar B)
Date Tue, 10 Feb 2015 05:13:58 GMT
Repository: hadoop
Updated Branches:
  refs/heads/trunk 23bf6c720 -> 3d15728ff


HDFS-7714. Simultaneous restart of HA NameNodes and DataNode can cause DataNode to register
successfully with only one NameNode.(Contributed by Vinayakumar B)


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/3d15728f
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/3d15728f
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/3d15728f

Branch: refs/heads/trunk
Commit: 3d15728ff5301296801e541d9b23bd1687c4adad
Parents: 23bf6c7
Author: Vinayakumar B <vinayakumarb@apache.org>
Authored: Tue Feb 10 10:43:08 2015 +0530
Committer: Vinayakumar B <vinayakumarb@apache.org>
Committed: Tue Feb 10 10:43:08 2015 +0530

----------------------------------------------------------------------
 hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt                     | 3 +++
 .../org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java  | 5 +++++
 2 files changed, 8 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hadoop/blob/3d15728f/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 4a6bc11..1ca2263 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -896,6 +896,9 @@ Release 2.7.0 - UNRELEASED
     HDFS-7718. Store KeyProvider in ClientContext to avoid leaking key provider
     threads when using FileContext (Arun Suresh via Colin P. McCabe)
 
+    HDFS-7714. Simultaneous restart of HA NameNodes and DataNode can cause
+    DataNode to register successfully with only one NameNode.(vinayakumarb)
+
 Release 2.6.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

http://git-wip-us.apache.org/repos/asf/hadoop/blob/3d15728f/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
----------------------------------------------------------------------
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
index e396727..917b5dd 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
@@ -19,6 +19,7 @@ package org.apache.hadoop.hdfs.server.datanode;
 
 import static org.apache.hadoop.util.Time.now;
 
+import java.io.EOFException;
 import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.net.SocketTimeoutException;
@@ -797,6 +798,10 @@ class BPServiceActor implements Runnable {
         // Use returned registration from namenode with updated fields
         bpRegistration = bpNamenode.registerDatanode(bpRegistration);
         break;
+      } catch(EOFException e) {  // namenode might have just restarted
+        LOG.info("Problem connecting to server: " + nnAddr + " :"
+            + e.getLocalizedMessage());
+        sleepAndLogInterrupts(1000, "connecting to server");
       } catch(SocketTimeoutException e) {  // namenode is busy
         LOG.info("Problem connecting to server: " + nnAddr);
         sleepAndLogInterrupts(1000, "connecting to server");


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