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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3805) A small improvement of SerialNumberManager$SerialNumberMap.get
Date Wed, 15 Aug 2012 02:27:38 GMT
Jing Zhao created HDFS-3805:
-------------------------------

             Summary: A small improvement of SerialNumberManager$SerialNumberMap.get
                 Key: HDFS-3805
                 URL: https://issues.apache.org/jira/browse/HDFS-3805
             Project: Hadoop HDFS
          Issue Type: Improvement
    Affects Versions: 3.0.0
            Reporter: Jing Zhao
            Assignee: Jing Zhao
            Priority: Trivial
             Fix For: 3.0.0


Instead of use containsKey() + get() to get the value from the HashMap, we can do get() once
and check if the result is null

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