[HDFS-4967] Generate block ID sequentially cannot work with QJM HA

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 3.0.0-alpha1
• Component/s: ha, hdfs-client, namenode
• Assignee: Arpit Agarwal
• Reporter: Fengdong Yu
• Created: 09/Jul/13 03:34
• Updated: 12/May/16 18:11
• Resolved: 10/Jul/13 02:23

Description

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:

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

Issue Links

• relates to: HDFS-4645 Move from randomly generated block ID to sequentially generated block ID