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ramkrishna.s.vasudevan commented on HDFS-1989: ---------------------------------------------- of syncs: 21 SyncTimes(ms): 130 176 2011-05-17 14:28:44,921 ERROR org.apache.hadoop.hdfs.server.namenode.FSEditLog: Unable to sync edit log. java.io.IOException: java.lang.IllegalStateException: !!! WARNING !!! File system changes are not persistent. No journal streams. at org.apache.hadoop.hdfs.server.namenode.FSEditLog.logEdit(FSEditLog.java:1029) at org.apache.hadoop.hdfs.server.namenode.BackupImage.journal(BackupImage.java:247) at org.apache.hadoop.hdfs.server.namenode.BackupNode.journal(BackupNode.java:224) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:422) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1419) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1415) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1131) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1413) at org.apache.hadoop.ipc.Client.call(Client.java:1052) at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:250) at $Proxy8.journal(Unknown Source) at org.apache.hadoop.hdfs.server.namenode.EditLogBackupOutputStream.send(EditLogBackupOutputStream.java:181) at org.apache.hadoop.hdfs.server.namenode.EditLogBackupOutputStream.flushAndSync(EditLogBackupOutputStream.java:155) at org.apache.hadoop.hdfs.server.namenode.EditLogOutputStream.flush(EditLogOutputStream.java:84) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.logSync(FSEditLog.java:515) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFile(FSNamesystem.java:1797) at org.apache.hadoop.hdfs.server.namenode.NameNode.complete(NameNode.java:896) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:422) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1419) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1415) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1131) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1413) > When checkpointing by backup node occurs parallely when a file is being > closed by a client then Exception occurs saying no journal streams. > -------------------------------------------------------------------------------------------------------------------------------------------- > > Key: HDFS-1989 > URL: https://issues.apache.org/jira/browse/HDFS-1989 > Project: Hadoop HDFS > Issue Type: Bug > Components: name-node > Affects Versions: 0.23.0 > Reporter: ramkrishna.s.vasudevan > Fix For: 0.23.0 > > > Backup namenode initiates the checkpointing process. > As a part of checkpointing based on the timestamp it tries to download the > FSImage or use the existing one. > Then it tries to save the FSImage. > During this time it tries to close the editLog streams. > Parallely when a client tries to close a file just after the checkpointing > process closes the editLog Stream then we get an exception saying > java.io.IOException: java.lang.IllegalStateException: !!! WARNING !!! File > system changes are not persistent. No journal streams. > Here the saveNameSpace api closes all the editlog streams resulting in this > issue. > -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira