aplee created HDFS-9477:
---------------------------

             Summary: namenode starts failed:FSEditLogLoader: Encountered 
exception on operation TimesOp
                 Key: HDFS-9477
                 URL: https://issues.apache.org/jira/browse/HDFS-9477
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: namenode
    Affects Versions: 2.7.0
         Environment: Ubuntu 12.04.1 LTS, java version "1.7.0_79"
            Reporter: aplee
            Assignee: aplee


backup name start failed, log below:
2015-11-28 14:09:13,462 ERROR 
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader: Encountered exception 
on operation TimesOp [length=0, path=/.reserved/.inodes/2346114, mtime=-1, 
atime=1448692924700, opCode=OP_TIMES, txid=14774180]
java.lang.NullPointerException
        at 
org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:473)
        at 
org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:299)
        at 
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:629)
        at 
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:234)
        at 
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:143)
        at 
org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:832)
        at 
org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:813)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:232)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:331)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$200(EditLogTailer.java:284)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:301)
        at 
org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:415)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:297)
2015-11-28 14:09:13,572 FATAL 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer: Unknown error 
encountered while tailing edits. Shutting down standby NN.
java.io.IOException: java.lang.NullPointerException
        at 
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:244)
        at 
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:143)
        at 
org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:832)
        at 
org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:813)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:232)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:331)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$200(EditLogTailer.java:284)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:301)
        at 
org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:415)
        at 
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:297)
Caused by: java.lang.NullPointerException
        at 
org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:473)
        at 
org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:299)
        at 
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:629)
        at 
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:234)
        ... 9 more
2015-11-28 14:09:13,574 INFO org.apache.hadoop.util.ExitUtil: Exiting with 
status 1
2015-11-28 14:09:13,575 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: 
SHUTDOWN_MSG: 

I found record in Edits, but I don't know how this record generated

<RECORD>
    <OPCODE>OP_TIMES</OPCODE>
    <DATA>
      <TXID>14774180</TXID>
      <LENGTH>0</LENGTH>
      <PATH>/.reserved/.inodes/2346114</PATH>
      <MTIME>-1</MTIME>
      <ATIME>1448692924700</ATIME>
    </DATA>
  </RECORD>



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