[HADOOP-3577] Tools to inject blocks into name node and simulated data nodes for testing

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.19.0
• Hadoop Flags: Reviewed
• Assignee: Sanjay Radia
• Reporter: Sanjay Radia
• Created: 17/Jun/08 04:47
• Updated: 08/Jul/09 16:43
• Resolved: 23/Jun/08 23:13

Description

This jira adds the following 2 features to src/test
1) it extends DataNodeCluster to allow blocks to be injected for simulted data nodes.
2) a new command, CreatedEditsLog which creates an NN image edits logs that has a transactions for new files. The edits log file can be copied to the NN's image.

Using the two in conjunction one can inject a set of blocks in a NN and in a set of Datanodes and use it for testing, for example a cluster of 3K DNs