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Brahma Reddy Battula commented on HDFS-3385: -------------------------------------------- Hi Nichalos.. I have reproduced same.. Scenario: -------- write a file append a file so that it fails and close the clients again try to append the same file we will get ClassCastException. I verified your patch..it's fine..:) > 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} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira