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Date: Wed, 23 Apr 2008 12:07:21 -0700 (PDT)
From: "Doug Cutting (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-3262) make Hadoop compile under Apache
 Harmony
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    [ https://issues.apache.org/jira/browse/HADOOP-3262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12591739#action_12591739 ] 

Doug Cutting commented on HADOOP-3262:
--------------------------------------

Sigh.  I can't find a way to get a class that 'implements Delayed' to compile in both Sun Java and Harmony.

Given:

{noformat}
public interface Comparable<T> {
  int compareTo(T o);
}
public interface Delayed extends Comparable<Delayed> {}
{noformat}

Harmony requires the first of the following methods, but doesn't mind the second, while Sun permits only the second.

{noformat}
public class DelayedImpl implements Delayed {
  public int compareTo(Object o);
  public int compareTo(Delayed o);
}
{noformat}

My hunch is that Sun is correct here and that we should file a bug against Harmony.


> make Hadoop compile under Apache Harmony
> ----------------------------------------
>
>                 Key: HADOOP-3262
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3262
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: build
>            Reporter: Doug Cutting
>            Assignee: Doug Cutting
>         Attachments: HADOOP-3262.patch
>
>
> Some small changes are required to get Hadoop Core to compile with Apache Harmony.

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