Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-1002

Secondary Name Node crash, NPE in edit log replay

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Blocker Blocker
    • Resolution: Invalid
    • Affects Version/s: 0.21.0
    • Fix Version/s: 0.21.0
    • Component/s: None
    • Labels:
      None

      Description

      An NPE in SNN, the core of the message looks like yay so:

      2010-02-25 11:54:05,834 ERROR org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: java.lang.NullPointerException
      at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1152)
      at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1164)
      at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addNode(FSDirectory.java:1067)
      at org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedAddFile(FSDirectory.java:213)
      at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadEditRecords(FSEditLog.java:511)
      at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:401)
      at org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:368)
      at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:1172)
      at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.doMerge(SecondaryNameNode.java:594)
      at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.access$000(SecondaryNameNode.java:476)
      at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doMerge(SecondaryNameNode.java:353)
      at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doCheckpoint(SecondaryNameNode.java:317)
      at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:219)
      at java.lang.Thread.run(Thread.java:619)

      This happens even if I restart SNN over and over again.

      1. snn_log.txt
        10 kB
        ryan rawson
      2. snn_crash.tar.gz
        6.63 MB
        ryan rawson
      3. addChildNPE.patch
        4 kB
        Carlos Valiente

        Issue Links

          Activity

            People

            • Assignee:
              Unassigned
              Reporter:
              ryan rawson
            • Votes:
              0 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development