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https://issues.apache.org/jira/browse/HBASE-5680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652091#comment-13652091
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Jean-Daniel Cryans commented on HBASE-5680:
-------------------------------------------
[~dangyifei] You might want to write in English in the future as this the
common language we use.
So, Google Translate is telling me that you don't know how solve this?
Considering that this issue was closed a year ago, you might want to go to the
user mailing list (http://hbase.apache.org/mail-lists.html) and ask a more
specific question there, including how exactly it doesn't work for you.
> Improve compatibility warning about HBase with Hadoop 0.23.x
> ------------------------------------------------------------
>
> Key: HBASE-5680
> URL: https://issues.apache.org/jira/browse/HBASE-5680
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.6, 0.92.1, 0.94.0, 0.95.2
> Reporter: Kristam Subba Swathi
> Assignee: Jonathan Hsieh
> Fix For: 0.94.0, 0.95.0
>
> Attachments: hbase-5680-94.patch
>
>
> Hmaster is not able to start because of the following error
> Please find the following error
> ----------------------------
> 2012-03-30 11:12:19,487 FATAL org.apache.hadoop.hbase.master.HMaster:
> Unhandled exception. Starting shutdown.
> java.lang.NoClassDefFoundError:
> org/apache/hadoop/hdfs/protocol/FSConstants$SafeModeAction
> at org.apache.hadoop.hbase.util.FSUtils.waitOnSafeMode(FSUtils.java:524)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.checkRootDir(MasterFileSystem.java:324)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:127)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:112)
> at
> org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:496)
> at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:363)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.hdfs.protocol.FSConstants$SafeModeAction
> at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> ... 7 more
> There is a change in the FSConstants
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