[HDFS-360] Replace Vector types by ArrayList in FSDirectory

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Konstantin Shvachko
• Created: 18/Apr/07 18:39
• Updated: 20/Jun/09 07:42

Description

FSDirectory contains local variables that are declared Vector but are used within a
synchronized

{ ... }

block. Extra synchronization provided by Vector is redundant in the case.
Using ArrayLists instead should boost the performance.