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Date: Fri, 22 Feb 2008 09:15:20 -0800 (PST)
From: "Raghu Angadi (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-2873) Namenode fails to re-start after
 cluster shutdown - DFSClient: Could not obtain blocks even all datanodes
 were up & live
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    [ https://issues.apache.org/jira/browse/HADOOP-2873?page=3Dcom.atlassia=
n.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D125=
71474#action_12571474 ]=20

Raghu Angadi commented on HADOOP-2873:
--------------------------------------

FSNameSystem.saveFilesUnderConstruction() and FSImage.loadFilesUnderConstru=
ction() don't seem to match.

FSImage.loadFilesUnderConstruction() assumes there is only one file per lea=
se.

> Namenode fails to re-start after cluster shutdown - DFSClient: Could not =
obtain blocks even all datanodes were up & live
> -------------------------------------------------------------------------=
-----------------------------------------------
>
>                 Key: HADOOP-2873
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2873
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.17.0
>            Reporter: Andr=C3=A9 Martin
>
> Namenode fails to re-start with the following exception:
>  2008-02-21 14:20:48,831 INFO org.apache.hadoop.dfs.NameNode: STARTUP_MSG=
:
>  /************************************************************
>  STARTUP_MSG: Starting NameNode
>  STARTUP_MSG:   host =3D se09/141.76.xxx.xxx
>  STARTUP_MSG:   args =3D []
>  STARTUP_MSG:   version =3D 2008-02-19_11-01-48
>  STARTUP_MSG:   build =3D http://svn.apache.org/repos/asf/hadoop/core/tru=
nk -r 628999; compiled by 'hudson' on Tue Feb 19 11:09:05 UTC 2008
>  ************************************************************/
>  2008-02-21 14:20:49,367 INFO org.apache.hadoop.metrics.jvm.JvmMetrics: I=
nitializing RPC Metrics with serverName=3DNameNode, port=3D8000
>  2008-02-21 14:20:49,374 INFO org.apache.hadoop.dfs.NameNode: Namenode up=
 at: se09.inf.tu-dresden.de/141.76.xxx.xxx:8000
>  2008-02-21 14:20:49,378 INFO org.apache.hadoop.metrics.jvm.JvmMetrics: I=
nitializing JVM Metrics with processName=3DNameNode, sessionId=3Dnull
>  2008-02-21 14:20:49,381 INFO org.apache.hadoop.dfs.NameNodeMetrics: Init=
ializing NameNodeMeterics using context object:org.apache.hadoop.metrics.sp=
i.NullContext
>  2008-02-21 14:20:49,501 INFO org.apache.hadoop.fs.FSNamesystem: fsOwner=
=3Damartin,students
>  2008-02-21 14:20:49,501 INFO org.apache.hadoop.fs.FSNamesystem: supergro=
up=3Dsupergroup
>  2008-02-21 14:20:49,501 INFO org.apache.hadoop.fs.FSNamesystem: isPermis=
sionEnabled=3Dtrue
>  2008-02-21 14:20:49,788 INFO org.apache.hadoop.ipc.Server: Stopping serv=
er on 8000
>  2008-02-21 14:20:49,790 ERROR org.apache.hadoop.dfs.NameNode: java.io.IO=
Exception: Created 13 leases but found 4
>      at org.apache.hadoop.dfs.FSImage.loadFilesUnderConstruction(FSImage.=
java:935)
>      at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:749)
>      at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:634)
>      at org.apache.hadoop.dfs.FSImage.recoverTransitionRead(FSImage.java:=
223)
>      at org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:79=
)
>      at org.apache.hadoop.dfs.FSNamesystem.initialize(FSNamesystem.java:2=
61)
>      at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:242)
>      at org.apache.hadoop.dfs.NameNode.initialize(NameNode.java:131)
>      at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:176)
>      at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:162)
>      at org.apache.hadoop.dfs.NameNode.createNameNode(NameNode.java:851)
>      at org.apache.hadoop.dfs.NameNode.main(NameNode.java:860)
>  2008-02-21 14:20:49,791 INFO org.apache.hadoop.dfs.NameNode: SHUTDOWN_MS=
G:
>  /************************************************************
>  SHUTDOWN_MSG: Shutting down NameNode at se09/141.76.xxx.xxx
>  ************************************************************/=20
> Cluster restart was needed since the DFS client produced the following er=
ror message even all datanodes were up:
>  08/02/21 14:04:35 INFO fs.DFSClient: Could not obtain block blk_-4008950=
704646490788 from any node:  java.io.IOException: No live nodes contain cur=
rent block

--=20
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