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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10280) Make Schedulables return a configurable identity of user or group
Date Thu, 20 Mar 2014 02:25:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13941322#comment-13941322
] 

Hadoop QA commented on HADOOP-10280:
------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12635695/HADOOP-10280.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 1 new or modified
test files.

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

    {color:green}+1 javadoc{color}.  There were no new javadoc 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:green}+1 core tests{color}.  The patch passed unit tests in hadoop-common-project/hadoop-common.

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

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/3685//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/3685//console

This message is automatically generated.

> Make Schedulables return a configurable identity of user or group
> -----------------------------------------------------------------
>
>                 Key: HADOOP-10280
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10280
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Chris Li
>            Assignee: Chris Li
>         Attachments: HADOOP-10280.patch, HADOOP-10280.patch, HADOOP-10280.patch, HADOOP-10280.patch
>
>
> In order to intelligently schedule incoming calls, we need to know what identity it falls
under.
> We do this by defining the Schedulable interface, which has one method, getIdentity(IdentityType
idType)
> The scheduler can then query a Schedulable object for its identity, depending on what
idType is. 
> For example:
> Call 1: Made by user=Alice, group=admins
> Call 2: Made by user=Bob, group=admins
> Call 3: Made by user=Carlos, group=users
> Call 4: Made by user=Alice, group=admins
> Depending on what the identity is, we would treat these requests differently. If we query
on Username, we can bucket these 4 requests into 3 sets for Alice, Bob, and Carlos. If we
query on Groupname, we can bucket these 4 requests into 2 sets for admins and users.
> In this initial version, idType can be username or primary group. In future versions,
it could be jobID, request class (read or write), or some explicit QoS field. These are user-defined,
and will be reloaded on callqueue refresh.



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