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Date: Tue, 13 May 2008 01:38:55 -0700 (PDT)
From: "Devaraj Das (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Updated: (HADOOP-3365) SequenceFile.Sorter.MergeQueue.next
 does an unnecessary copy of the key
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     [ https://issues.apache.org/jira/browse/HADOOP-3365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Devaraj Das updated HADOOP-3365:
--------------------------------

    Hadoop Flags: [Reviewed]
          Status: Patch Available  (was: Open)

Pushing the last patch through hudson

> SequenceFile.Sorter.MergeQueue.next does an unnecessary copy of the key
> -----------------------------------------------------------------------
>
>                 Key: HADOOP-3365
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3365
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 0.17.0
>            Reporter: Arun C Murthy
>            Assignee: Devaraj Das
>             Fix For: 0.18.0
>
>         Attachments: 3365.patch, 3365.patch, 3365.patch
>
>
> SequenceFile.Sorter.MergeQueue.next does an unnecessary copy of the *rawKey*. We should remove that copy, and move code which adjusts the _heap_ from {{next()}} to {{getKey()}}, which should then just return {{ms.getKey()}}, thereby eliminating the extra copy.

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