[HDFS-511] Redundant block searches in BlockManager.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.21.0
• Fix Version/s: 0.21.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Konstantin Shvachko
• Reporter: Konstantin Shvachko
• Created: 28/Jul/09 23:30
• Updated: 24/Aug/10 20:48
• Resolved: 05/Aug/09 01:06

Description

Some searches for a block in blocksMap are redundant and should be eliminated.
BlockManager.addStoredBlock() contain unnecessary explicit and hidden (inside markBlockAsCorrupt()) calls of blocksMap.getStoredBlock().