[HDFS-1457] Limit transmission rate when transfering image between primary and secondary NNs

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Fix Version/s: 0.22.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Release Note: Add a configuration variable dfs.image.transfer.bandwidthPerSec to allow the user to specify the amount of bandwidth for transferring image and edits. Its default value is 0 indicating no throttling.
• Assignee: Hairong Kuang
• Reporter: Hairong Kuang
• Created: 14/Oct/10 18:29
• Updated: 12/Dec/11 06:19
• Resolved: 09/Nov/10 04:31

Description

If the fsimage is very big. The network is full in a short time when SeconaryNamenode do checkpoint, leading to Jobtracker access Namenode to get relevant file data to fail in job initialization phase. So we limit transmission speed and compress transmission to resolve the problem.

Issue Links

• relates to: HDFS-1435 Provide an option to store fsimage compressed