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Posted to common-dev@hadoop.apache.org by "madhukara phatak (JIRA)" <ji...@apache.org> on 2012/07/03 11:01:13 UTC

[jira] [Created] (HADOOP-8549) Allow other implementation's of java.util.Map in MapWritable

madhukara phatak created HADOOP-8549:
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             Summary: Allow other implementation's of java.util.Map in MapWritable
                 Key: HADOOP-8549
                 URL: https://issues.apache.org/jira/browse/HADOOP-8549
             Project: Hadoop Common
          Issue Type: Improvement
          Components: io
    Affects Versions: 2.0.0-alpha
            Reporter: madhukara phatak
            Assignee: madhukara phatak
            Priority: Minor


Current implementation of MapWritable uses HashMap as Map implementation. But in some of the use cases we need other implementations of Map like LinkedHashMap,SortedMap.This jira changes visibility of 'instance' in MapWritable from private to protected which allows us to inject custom Map implementation through sub classing MapWritable  .  

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