jun aoki created HDFS-6103:
------------------------------
Summary: FSImage file system image version check throw a
(slightly) wrong parameter.
Key: HDFS-6103
URL: https://issues.apache.org/jira/browse/HDFS-6103
Project: Hadoop HDFS
Issue Type: Improvement
Components: namenode
Affects Versions: 2.2.0
Reporter: jun aoki
Priority: Trivial
Trivial error message issue:
When upgrading hdfs, say from 2.0.5 to 2.2.0, users will need to start namenode
with "upgrade" option.
e.g.
{code}
sudo service namenode upgrade
{code}
That said, the actual error while without the option said "-upgrade" (with a
hyphen)
{code}
2014-03-13 23:38:15,488 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode:
Exception in namenode join
java.io.IOException:
File system image contains an old layout version -40.
An upgrade to version -47 is required.
Please restart NameNode with -upgrade option.
at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:221)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:787)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:568)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:443)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:491)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:684)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:669)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1254)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1320)
2014-03-13 23:38:15,492 INFO org.apache.hadoop.util.ExitUtil: Exiting with
status 1
2014-03-13 23:38:15,493 INFO org.apache.hadoop.hdfs.server.namenode.NameNode:
SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at nn1/192.168.2.202
************************************************************/
~
{code}
I'm referring to 2.0.5 above,
https://github.com/apache/hadoop-common/blob/branch-2.0.5/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java#L225
I haven't tried the trunk but it seems to return "UPGRADE" (all upper case)
which again anther slightly wrong error description.
https://github.com/apache/hadoop-common/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java#L232
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