Mailing-List: contact core-dev-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: core-dev@hadoop.apache.org
Message-ID: <1889270055.1217460991869.JavaMail.jira@brutus>
Date: Wed, 30 Jul 2008 16:36:31 -0700 (PDT)
From: "dhruba borthakur (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-3131) enabling BLOCK compression for map
 outputs breaks the reduce progress counters
In-Reply-To: <61007758.1206753744262.JavaMail.jira@brutus>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/HADOOP-3131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12618557#action_12618557 ] 

dhruba borthakur commented on HADOOP-3131:
------------------------------------------

Hi arun, would you like to code-review this patch one final time? Thanks.

> enabling BLOCK compression for map outputs breaks the reduce progress counters
> ------------------------------------------------------------------------------
>
>                 Key: HADOOP-3131
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3131
>             Project: Hadoop Core
>          Issue Type: Bug
>    Affects Versions: 0.17.0, 0.17.1, 0.17.2, 0.18.0, 0.19.0
>            Reporter: Colin Evans
>            Assignee: Matei Zaharia
>             Fix For: 0.19.0
>
>         Attachments: HADOOP-3131-v2.patch, HADOOP-3131-v3.patch, HADOOP-3131-v4.patch, HADOOP-3131-v5.patch, HADOOP-3131-v6.patch, merge-progress-trunk.patch, merge-progress.patch, Picture 1.png
>
>
> Enabling map output compression and setting the compression type to BLOCK causes the progress counters during the reduce to go crazy and report progress counts over 100%.
> This is problematic for speculative execution because it thinks the tasks are doing fine.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.