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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8549) Allow other implementation's of java.util.Map in MapWritable
Date Sun, 15 Nov 2015 13:26:11 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15005889#comment-15005889
] 

Steve Loughran commented on HADOOP-8549:
----------------------------------------

Is this still an issue, or can we close it as wontfix/cannot reproduce?

> 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
>         Attachments: HADOOP-8549.patch
>
>
> 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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