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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3385) ClassCastException when trying to append a file
Date Wed, 09 May 2012 09:15:57 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13271231#comment-13271231
] 

Brahma Reddy Battula commented on HDFS-3385:
--------------------------------------------

Hi Nichalos,,thanks for look..

Actually I didn't get exact scenario to reproduce.

First, let me try to reproduce this issue and then I'll verify your patch.

  *fulltrace when I got* 


{noformat}
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:1782)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1580)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:1819)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.append(NameNodeRpcServer.java:416)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.append(ClientNamenodeProtocolServerSideTranslatorPB.java:217)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:42592)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:417)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:891)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1661)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1657)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1205)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1655)

	at org.apache.hadoop.ipc.Client.call(Client.java:1159)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:185)
	at $Proxy9.append(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:165)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:84)
	at $Proxy9.append(Unknown Source)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.append(ClientNamenodeProtocolTranslatorPB.java:214)
	at org.apache.hadoop.hdfs.DFSClient.callAppend(DFSClient.java:1178)
	at org.apache.hadoop.hdfs.DFSClient.append(DFSClient.java:1217)
	at org.apache.hadoop.hdfs.DFSClient.append(DFSClient.java:1205)
	at org.apache.hadoop.hdfs.DistributedFileSystem.append(DistributedFileSystem.java:209)
	at org.apache.hadoop.fs.FileSystem.append(FileSystem.java:973)
	at com.huawei.isap.test.smartump.hdfs.TestHDFSAPI.appendFile(TestHDFSAPI.java:76)
	at com.huawei.isap.test.smartump.hdfs.TestHDFSAPI.main(TestHDFSAPI.java:40
{noformat}
                
> 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
>    Affects Versions: 3.0.0
>         Environment: HDFS
>            Reporter: Brahma Reddy Battula
>            Priority: Minor
>             Fix For: 3.0.0
>
>         Attachments: h3385_20120508.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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