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From "Travis Thompson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-6180) dead node count / listing is very broken in JMX and old GUI
Date Tue, 01 Apr 2014 18:11:18 GMT
Travis Thompson created HDFS-6180:
-------------------------------------

             Summary: dead node count / listing is very broken in JMX and old GUI
                 Key: HDFS-6180
                 URL: https://issues.apache.org/jira/browse/HDFS-6180
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.3.0
            Reporter: Travis Thompson


After bringing up a 578 node cluster with 13 dead nodes, 0 were reported on the new GUI, but
showed up properly in the datanodes tab.  Some nodes are also being double reported in the
deadnode and inservice section (22 show up dead, 565 show up alive, 9 duplicated nodes). 

>From /jmx (confirmed that it's the same in jconsole):
{noformat}
{
    "name" : "Hadoop:service=NameNode,name=FSNamesystemState",
    "modelerType" : "org.apache.hadoop.hdfs.server.namenode.FSNamesystem",
    "CapacityTotal" : 5477748687372288,
    "CapacityUsed" : 24825720407,
    "CapacityRemaining" : 5477723861651881,
    "TotalLoad" : 565,
    "SnapshotStats" : "{\"SnapshottableDirectories\":0,\"Snapshots\":0}",
    "BlocksTotal" : 21065,
    "MaxObjects" : 0,
    "FilesTotal" : 25454,
    "PendingReplicationBlocks" : 0,
    "UnderReplicatedBlocks" : 0,
    "ScheduledReplicationBlocks" : 0,
    "FSState" : "Operational",
    "NumLiveDataNodes" : 565,
    "NumDeadDataNodes" : 0,
    "NumDecomLiveDataNodes" : 0,
    "NumDecomDeadDataNodes" : 0,
    "NumDecommissioningDataNodes" : 0,
    "NumStaleDataNodes" : 1
  },
{noformat}

I'm not going to include deadnode/livenodes because the list is huge, but I've confirmed there
are 9 nodes showing up in both deadnodes and livenodes.



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