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https://issues.apache.org/jira/browse/HDFS-3385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tsz Wo (Nicholas), SZE updated HDFS-3385:
-----------------------------------------
Attachment: h3385_20120509.patch
It turns out that the ClassCastException can be reproduced by the following.
# Create a new file with a full block.
# Append but not add any data so that the last block remains full and the last
block in INodeFileUnderConstruction is a BlockInfo but not
BlockInfoUnderConstruction.
# Append again.
h3385_20120509.patch:
- adds the test above;
- fixes the indentation.
> ClassCastException when trying to append a file
> -----------------------------------------------
>
> Key: HDFS-3385
> URL: https://issues.apache.org/jira/browse/HDFS-3385
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Environment: HDFS
> Reporter: Brahma Reddy Battula
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h3385_20120508.patch, h3385_20120509.patch
>
>
> When I try to append a file I got
> {noformat}
> 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)
> {noformat}
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