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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