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From "nijel (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-9201) Namenode Performance Improvement : Using for loop without iterator
Date Tue, 06 Oct 2015 11:52:26 GMT
nijel created HDFS-9201:
---------------------------

             Summary: Namenode Performance Improvement : Using for loop without iterator
                 Key: HDFS-9201
                 URL: https://issues.apache.org/jira/browse/HDFS-9201
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: nijel
            Assignee: nijel


As discussed in HBASE-12023, the for each loop syntax will create few extra objects and garbage.

For arrays and Lists can change to the traditional syntax. 
This can improve memory foot print and can result in performance gain.





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