[HDFS-3981] access time is set without holding FSNamesystem write lock

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.3, 2.0.3-alpha, 0.23.5
• Fix Version/s: 2.3.0
• Component/s: namenode
• Target Version/s: 0.23.4
• Hadoop Flags: Reviewed
• Assignee: Xiaobo Peng
• Reporter: Xiaobo Peng
• Created: 26/Sep/12 19:29
• Updated: 03/Sep/14 23:34
• Resolved: 27/Aug/13 23:39

Description

Incorrect condition in FSNamesystem.getBlockLocatoins() can lead to updating times without write lock. In most cases this condition will force FSNamesystem.getBlockLocatoins() to hold write lock, even if times do not need to be updated.