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From "Fengdong Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4967) Generate block ID sequentially cannot work with QJM HA
Date Tue, 09 Jul 2013 13:17:49 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13703241#comment-13703241
] 

Fengdong Yu commented on HDFS-4967:
-----------------------------------

I want to add more of my further tests:

HDFS-4645 commited version in the trunk is :r1500580 ,then I checked out r1500194 from the
trunk, just before HDFS-4645 checked in.

then I am also do some hack:
{code}
--- hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutVersion.java
   (revision 1500194)
+++ hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/LayoutVersion.java
   (working copy)
@@ -101,7 +101,7 @@
     SNAPSHOT(-43, "Support for snapshot feature"),
     RESERVED_REL1_3_0(-44, -41,
         "Reserved for release 1.3.0", true, ADD_INODE_ID, SNAPSHOT),
-    OPTIMIZE_SNAPSHOT_INODES(-45, -43,
+    OPTIMIZE_SNAPSHOT_INODES(-43, -43,
         "Reduce snapshot inode memory footprint", false);
{code}

then I "start-dfs.sh", everything looks good to me.

so we cannot close this issue currently.

                
> Generate block ID sequentially cannot work with QJM HA
> ------------------------------------------------------
>
>                 Key: HDFS-4967
>                 URL: https://issues.apache.org/jira/browse/HDFS-4967
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, hdfs-client, namenode
>    Affects Versions: 3.0.0
>            Reporter: Fengdong Yu
>            Assignee: Arpit Agarwal
>
> There are two name nodes, one is active, another acts as standby name node. QJM Ha  configured.
> After HDFS-4645 committed in the trunk, then the following error showed during name node
start:
> {code}
> 2013-07-09 11:28:45,394 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Exception
in namenode join
> java.lang.IllegalStateException: Cannot skip to less than the current value (=1073741824),
where newValue=0
>         at org.apache.hadoop.util.SequentialNumber.skipTo(SequentialNumber.java:58)
>         at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setLastAllocatedBlockId(FSNamesystem.java:5124)
>         at org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.load(FSImageFormat.java:278)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:809)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:798)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImageFile(FSImage.java:653)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:623)
>         at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:260)
>         at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:719)
>         at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:552)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:401)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:435)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:607)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:592)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1172)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1238)
> 2013-07-09 11:28:45,397 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
> {code}

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