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Date: Tue, 12 Sep 2017 03:42:01 +0000 (UTC)
From: "Wangda Tan (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.13101446.1505164327000.87313.1505187721739@Atlassian.JIRA>
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References: <JIRA.13101446.1505164327000@Atlassian.JIRA> <JIRA.13101446.1505164327321@jira-lw-us.apache.org>
Subject: [jira] [Updated] (YARN-7185) ContainerScheduler should only look at
 availableResource for GUARANTEED containers when opportunistic scheduling
 is enabled
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archived-at: Tue, 12 Sep 2017 03:42:08 -0000


     [ https://issues.apache.org/jira/browse/YARN-7185?page=3Dcom.atlassian=
.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wangda Tan updated YARN-7185:
-----------------------------
    Attachment: YARN-7185.003.patch

Attached ver.3 patch. Fixed issues reported by unit tests.

> ContainerScheduler should only look at availableResource for GUARANTEED c=
ontainers when opportunistic scheduling is enabled=20
> -------------------------------------------------------------------------=
---------------------------------------------------
>
>                 Key: YARN-7185
>                 URL: https://issues.apache.org/jira/browse/YARN-7185
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: yarn
>            Reporter: Sumana Sathish
>            Assignee: Tan, Wangda
>            Priority: Blocker
>         Attachments: YARN-7185.001.patch, YARN-7185.002.patch, YARN-7185.=
003.patch
>
>
> Found an issue:=20
> When DefaultContainerCalculator is enabled and opportunistic container al=
location is disabled. It is possible that for a NM:
> {code}=20
> =CE=A3(allocated-container.vcores) > nm.configured-vores.=20
> {code}=20
> When this happens, ContainerScheduler will report errors like:
> bq. ContainerScheduler (ContainerScheduler.java:pickOpportunisticContaine=
rsToKill(458)) - There are no sufficient resources to start guaranteed.
> This will be an incompatible change after 2.8 because before YARN-6706, w=
e can start containers when DefaultContainerCalculator is configured and vc=
ores is overallocated.


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