[HDFS-1811] Create scripts to decommission datanodes

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Assignee: Erik Steffl
• Reporter: Owen O'Malley
• Created: 05/Apr/11 23:39
• Updated: 15/Jun/11 20:38
• Resolved: 15/Jun/11 20:38

Description

Create scripts to decommission datanodes:

• distribute exclude file
• input is location of exclude file
• location on namenodes: hdfs getconf -excludeFile
• list of namenodes: hdfs getconf -namenodes
• scp excludes files to all namenodes

• refresh namenodes
• list of namenodes: hdfs getconf -namenodes
• refresh namenodes: hdfs dfsadmin -refreshNodes

Two scripts are needed because each of them might require different permissions.