[HBASE-5680] Improve compatibility warning about HBase with Hadoop 0.23.x

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.90.6, 0.92.1, 0.94.0, 0.95.2
• Fix Version/s: 0.94.0, 0.95.0
• Component/s: master
• Hadoop Flags: Reviewed
• Assignee: Jonathan Hsieh
• Reporter: Kristam Subba Swathi
• Created: 30/Mar/12 09:42
• Updated: 09/May/13 05:03
• Resolved: 06/Apr/12 16:09

Description

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