[HDFS-3385] ClassCastException when trying to append a file

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.2-alpha
• Component/s: namenode

Environment

HDFS

• Hadoop Flags: Reviewed
• Assignee: Tsz-wo Sze
• Reporter: Brahma Reddy Battula
• Created: 08/May/12 12:45
• Updated: 07/Sep/12 21:09
• Resolved: 11/May/12 00:29

Description

When I try to append a file I got

2012-05-08 18:13:40,506 WARN  util.KerberosName (KerberosName.java:<clinit>(87)) - Kerberos krb5 configuration not found, setting default realm to empty
Exception in thread "main" java.lang.ClassCastException: org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo cannot be cast to org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoUnderConstruction
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.recoverLeaseInternal(FSNamesystem.java:1787)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1584)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:1824)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.append(NameNodeRpcServer.java:425)
        ...
	at org.apache.hadoop.hdfs.DFSClient.callAppend(DFSClient.java:1150)
	at org.apache.hadoop.hdfs.DFSClient.append(DFSClient.java:1189)
	at org.apache.hadoop.hdfs.DFSClient.append(DFSClient.java:1177)
	at org.apache.hadoop.hdfs.DistributedFileSystem.append(DistributedFileSystem.java:221)
	at org.apache.hadoop.hdfs.DistributedFileSystem.append(DistributedFileSystem.java:1)
	at org.apache.hadoop.fs.FileSystem.append(FileSystem.java:981)
	at org.apache.hadoop.hdfs.server.datanode.DeleteMe.main(DeleteMe.java:26)

Issue Links

• relates to: HDFS-3394 Do not use generic in INodeFile.getLastBlock()