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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1404) Add support for unmanaged containers
Date Tue, 12 Nov 2013 18:48:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-1404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13820345#comment-13820345
] 

Hadoop QA commented on YARN-1404:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12613372/YARN-1404.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 4 new or modified
test files.

      {color:red}-1 javac{color}.  The applied patch generated 1549 javac compiler warnings
(more than the trunk's current 1544 warnings).

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager:

                  org.apache.hadoop.yarn.client.api.impl.TestNMClient

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/2422//testReport/
Javac warnings: https://builds.apache.org/job/PreCommit-YARN-Build/2422//artifact/trunk/patchprocess/diffJavacWarnings.txt
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/2422//console

This message is automatically generated.

> Add support for unmanaged containers
> ------------------------------------
>
>                 Key: YARN-1404
>                 URL: https://issues.apache.org/jira/browse/YARN-1404
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: nodemanager
>    Affects Versions: 2.2.0
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>         Attachments: YARN-1404.patch
>
>
> Currently a container allocation requires to start a container process with the corresponding
NodeManager's node.
> For applications that need to use the allocated resources out of band from Yarn this
means that a dummy container process must be started.
> Impala/Llama is an example of such application which is currently starting a 'sleep 10y'
(10 years) process as the container process. And the resource capabilities are used out of
by and the Impala process collocated in the node. The Impala process ensures the processing
associated to that resources do not exceed the capabilities of the container. Also, if the
container is lost/preempted/killed, Impala stops using the corresponding resources.
> In addition, in the case of Llama, the current requirement of having a container process,
gets complicates when hard resource enforcement (memory -ContainersMonitor- or cpu -via cgroups-)
is enabled because Impala/Llama request resources with CPU and memory independently of each
other. Some requests are CPU only and others are memory only. Unmanaged containers solve this
problem as there is no underlying process with zero CPU or zero memory.



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