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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-537) We no longer wait on hdfs to exit safe mode
Date Fri, 21 Mar 2008 04:43:25 GMT
We no longer wait on hdfs to exit safe mode

                 Key: HBASE-537
                 URL: https://issues.apache.org/jira/browse/HBASE-537
             Project: Hadoop HBase
          Issue Type: Bug
            Reporter: stack

We used wait on hdfs to exit safe mode before going on to startup hbase but this feature is
broken since we moved out of hadoop contrib.  Now when you try start with hdfs in safe mode
you get:

08/03/21 04:39:56 FATAL hbase.HMaster: Not starting HMaster because:
org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.dfs.SafeModeException: Cannot create
directory /hbase010. Name node is in safe mode.
Safe mode will be turned off automatically.
        at org.apache.hadoop.dfs.FSNamesystem.mkdirsInternal(FSNamesystem.java:1571)
        at org.apache.hadoop.dfs.FSNamesystem.mkdirs(FSNamesystem.java:1559)
        at org.apache.hadoop.dfs.NameNode.mkdirs(NameNode.java:422)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

If you are lucky, it appears on STDOUT/ERR but may just be stuffed into logs and all looks
like its running properly.

Noticed first by Lars George.

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