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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1268) Replace Vector types by ArrayList in FSDirectory
Date Wed, 18 Apr 2007 18:41:15 GMT
Replace Vector types by ArrayList in FSDirectory
------------------------------------------------

                 Key: HADOOP-1268
                 URL: https://issues.apache.org/jira/browse/HADOOP-1268
             Project: Hadoop
          Issue Type: Improvement
    Affects Versions: 0.12.0, 0.11.0, 0.10.0
            Reporter: Konstantin Shvachko
             Fix For: 0.13.0


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.

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