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Date: Thu, 4 Dec 2008 06:01:46 -0800 (PST)
From: "Hemanth Yamijala (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Resolved: (HADOOP-4558) Scheduler fails to reclaim capacity
 if Jobs are submitted to queue one after the other
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     [ https://issues.apache.org/jira/browse/HADOOP-4558?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hemanth Yamijala resolved HADOOP-4558.
--------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.20.0
     Hadoop Flags: [Reviewed]

I ran the capacity scheduler tests, and they passed. Since the patch does not touch any other component, there was no need to run any other tests.

I just committed this. Thanks, Amar !

> Scheduler fails to reclaim capacity if Jobs are submitted to queue one after the other
> --------------------------------------------------------------------------------------
>
>                 Key: HADOOP-4558
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4558
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/capacity-sched
>    Affects Versions: 0.19.0
>         Environment: Cluster Capacity Maps=Reduces =210 each
> Two Queues: 
> Q1:  default, GC (%) =40, GC=84 (Maps and Reduces each). Reclaim time = 3 mins.
> Q2: test_q1, GC (%) =60, GC=126 (Maps and Reduces each) Reclaim time = 2 mins
>            Reporter: Karam Singh
>            Assignee: Amar Kamat
>             Fix For: 0.20.0
>
>         Attachments: 4558.1.patch, HADOOP-4558-v1.4.patch, HADOOP-4558-v1.5.patch, HADOOP-4558-v1.7.patch
>
>
> Scheduler fails to reclaim capacity if Jobs are submitted to queue one after the other.
> First job submitted with tasks equal to cluster's M/R Capacity
> Second is submitted to different queue when all tasks of First Job are running, scheduler fails to reclaim capacity for second job.

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