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From vino...@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, 01 Sep 2015 00:32:27 GMT
Repository: hadoop
Updated Branches:
  refs/heads/branch-2.6.1 a703952d3 -> 6154abfed


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

(cherry picked from commit 3d15728ff5301296801e541d9b23bd1687c4adad)
(cherry picked from commit a1bf7aecf7d018c5305fa3bd7a9e3ef9af3155c1)
(cherry picked from commit c1e65de57e8ef760586e28cd37397ea9a7ac7944)


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/6154abfe
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/6154abfe
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/6154abfe

Branch: refs/heads/branch-2.6.1
Commit: 6154abfedae62f3aa505a9c8b95b7af34da962c9
Parents: a703952
Author: Vinayakumar B <vinayakumarb@apache.org>
Authored: Tue Feb 10 10:43:08 2015 +0530
Committer: Vinod Kumar Vavilapalli <vinodkv@apache.org>
Committed: Mon Aug 31 17:26:28 2015 -0700

----------------------------------------------------------------------
 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/6154abfe/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 648f1ac..baeab81 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -70,6 +70,9 @@ Release 2.6.1 - UNRELEASED
     HDFS-7707. Edit log corruption due to delayed block removal again.
     (Yongjun Zhang via kihwal)
 
+    HDFS-7714. Simultaneous restart of HA NameNodes and DataNode can cause
+    DataNode to register successfully with only one NameNode.(vinayakumarb)
+
 Release 2.6.0 - 2014-11-18
 
   INCOMPATIBLE CHANGES

http://git-wip-us.apache.org/repos/asf/hadoop/blob/6154abfe/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 6bdb68a..62ba1ab 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;
@@ -802,6 +803,10 @@ 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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