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From "Shevek (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5727) Faster, simpler id.hashCode() which does not allocate memory
Date Thu, 23 Apr 2009 11:53:47 GMT
Faster, simpler id.hashCode() which does not allocate memory
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                 Key: HADOOP-5727
                 URL: https://issues.apache.org/jira/browse/HADOOP-5727
             Project: Hadoop Core
          Issue Type: Improvement
          Components: mapred
            Reporter: Shevek


Integer.valueOf allocates memory if the integer is not in the object-cache, which is the vast
majority of cases for the task id. It is possible to compute the hash code of an integer without
going via the integer cache, and hence avoiding allocating memory.

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