startJournalSpool should invoke ProcessIOError with failed storage directories
if createEditLogFile throws any exception.
---------------------------------------------------------------------------------------------------------------------------
Key: HDFS-2271
URL: https://issues.apache.org/jira/browse/HDFS-2271
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 0.22.0
Reporter: Uma Maheswara Rao G
Assignee: Uma Maheswara Rao G
If createEditsLogFile failes in startJournalSpool of BackUpStorage, BackUPNode
will proceed with following exceptions.
2011-04-09 21:24:43,892 ERROR namenode.FSNamesystem
(FSEditLog.java:logSync(1207)) - Unable to sync edit log.
org.apache.hadoop.ipc.RemoteException: java.io.FileNotFoundException:
/hdfsdata/7/patch/name/data/current/edits (No such file or directory)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:212)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLog$EditLogFileOutputStream.<init>(FSEditLog.java:150)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLog.createEditLogFile(FSEditLog.java:427)
at
org.apache.hadoop.hdfs.server.namenode.BackupStorage.startJournalSpool(BackupStorage.java:275)
at
org.apache.hadoop.hdfs.server.namenode.BackupNode.journal(BackupNode.java:327)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:541)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1105)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1101)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1099)
at org.apache.hadoop.ipc.Client.call(Client.java:953)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:239)
at $Proxy4.journal(Unknown Source)
at
org.apache.hadoop.hdfs.server.namenode.EditLogBackupOutputStream.send(EditLogBackupOutputStream.java:165)
at
org.apache.hadoop.hdfs.server.namenode.EditLogBackupOutputStream.flushAndSync(EditLogBackupOutputStream.java:145)
at
org.apache.hadoop.hdfs.server.namenode.EditLogOutputStream.flush(EditLogOutputStream.java:83)
at org.apache.hadoop.hdfs.server.namenode.FSEditLog.logSync(FSEditLog.java:1204)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startCheckpoint(FSNamesystem.java:5164)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.startCheckpoint(NameNode.java:547)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:541)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1105)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1101)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1099)
2011-04-09 21:24:43,893 ERROR namenode.FSNamesystem
(FSEditLog.java:processIOError(557)) - Unable to log edits to 10.18.53.203:50100
2011-04-09 21:24:44,353 WARN mortbay.log (Slf4jLog.java:warn(76)) - /getimage:
java.io.IOException: GetImage failed. java.io.IOException: Inconsistent
checkpoint fields.
LV = -18 namespaceID = 2007855034 cTime = 0; checkpointTime = 1302380284708.
Expecting respectively: -18; 2007855034; 0; 1302380284709
at
org.apache.hadoop.hdfs.server.namenode.CheckpointSignature.validateStorageInfo(CheckpointSignature.java:70)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.validateCheckpointUpload(FSImage.java:1732)
at
org.apache.hadoop.hdfs.server.namenode.GetImageServlet.doGet(GetImageServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
Solution:
When it failes to createEditLogFile, we can collect all the failed directories
and can call processIOError with that storageDirectories list
{code}
synchronized void startJournalSpool(NamenodeRegistration nnReg)
throws IOException {
..................
...................
ArrayList<StorageDirectory> errorSDs = new ArrayList<StorageDirectory>();
// create journal spool directories
for(Iterator<StorageDirectory> it =
dirIterator(NameNodeDirType.EDITS); it.hasNext();) {
...................
...................
// create edit file if missing
File eFile = getEditFile(sd);
if(!eFile.exists())
{
try
{
editLog.createEditLogFile(eFile);
}
catch(IOException ie)
{
LOG.error("Unable to save edits for " + sd.getRoot(), ie);
errorSDs.add(sd);
}
}
}
processIOError(errorSDs, true);
{code}
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