[HDFS-1905] Improve the usability of namenode -format

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Bharath Mundlapudi
• Reporter: Bharath Mundlapudi
• Created: 09/May/11 22:40
• Updated: 15/Nov/11 00:53
• Resolved: 19/May/11 18:06

Description

While setting up 0.23 version based cluster, i ran into this issue. When i issue a format namenode command, which got changed in 23, it should let the user know to how to use this command in case where complete options were not specified.

./hdfs namenode -format

I get the following error msg, still its not clear what and how user should use this command.

11/05/09 15:36:25 ERROR namenode.NameNode: java.lang.IllegalArgumentException: Format must be provided with clusterid
at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1483)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1623)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1689)

The usability of this command can be improved.

Issue Links

• relates to: HDFS-1941 Remove -genclusterid from NameNode startup options