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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6180) dead node count / listing is very broken in JMX and old GUI
Date Thu, 17 Apr 2014 18:05:15 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13973213#comment-13973213
] 

Colin Patrick McCabe commented on HDFS-6180:
--------------------------------------------

Thanks for fixing this, Haohui.

{code}
-  @Test(timeout=360000)
-  public void testIncludeByRegistrationName() throws IOException,
-      InterruptedException {
-    Configuration hdfsConf = new Configuration(conf);
-    final String registrationName = "--registration-name--";
-    final String nonExistentDn = "127.0.0.40";
-    hdfsConf.set(DFSConfigKeys.DFS_DATANODE_HOST_NAME_KEY, registrationName);
{code}

This test got removed, but I don't see any corresponding test added of registration names
(DFS_DATANODE_HOST_NAME_KEY).  Was this an oversight?

> 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
>            Assignee: Haohui Mai
>            Priority: Blocker
>             Fix For: 2.5.0
>
>         Attachments: HDFS-6180.000.patch, HDFS-6180.001.patch, HDFS-6180.002.patch, HDFS-6180.003.patch,
HDFS-6180.004.patch, dn.log
>
>
> 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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