[HADOOP-5961] DataNode should understand generic hadoop options

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.21.0
• Hadoop Flags: Reviewed
• Tags: hdfs datanode
• Assignee: Raghu Angadi
• Reporter: Raghu Angadi
• Created: 02/Jun/09 20:38
• Updated: 24/Aug/10 20:38
• Resolved: 05/Jun/09 18:03

Description

DataNode should use ToolRunner to parse generic hadoop options (like -Dconfig.var=value). Apart from being more consistent with rest of the hadoop programs, this is necessary to write a simple script to run multiple datanodes on the same node.

I had proposed a simple shell script to running multiple datanodes on a the user mailing list http://www.nabble.com/Contributing-to-hadoop-td22198897.html, but it requires that DataNode parses -D option.

I will submit a patch and a shell script that works.

Issue Links

• is related to: HDFS-439 HADOOP-5961 is incorrectly committed.