[HDFS-199] add replication factor for hdfs directory

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Ruyue Ma
• Reporter: Ruyue Ma
• Created: 03/Dec/08 17:39
• Updated: 10/Aug/18 11:39

Description

If we can set replication factor for directory. we can modify the DFSClent.create() method, pass 0 for the default block replication. Namenode check create request, if blockreplication is 0, it will give its parent dir replication factor to the file blockreplication factor. This will simplify the administration work. You know we can set /Test or /Tmp dir's replication factor 2 or 1, then all their children files and dirs replication factor is 2 or 1 defaultly.

Issue Links

• is blocked by: HADOOP-4771 FSImage saveFSImage() will have problem.
• relates to: IMPALA-5442 Allow HDFS replication factor to be set