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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-913) Add a way to register long-lived services in a YARN cluster
Date Wed, 01 Oct 2014 22:24:37 GMT

    [ https://issues.apache.org/jira/browse/YARN-913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14155664#comment-14155664
] 

Hadoop QA commented on YARN-913:
--------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12672406/YARN-913-016.patch
  against trunk revision 875aa79.

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

    {color:green}+1 tests included{color}.  The patch appears to include 36 new or modified
test files.

      {color:red}-1 javac{color}.  The applied patch generated 1266 javac compiler warnings
(more than the trunk's current 1265 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:red}-1 findbugs{color}.  The patch appears to introduce 1 new Findbugs (version
2.0.3) warnings.

        {color:red}-1 release audit{color}.  The applied patch generated 1 release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common hadoop-yarn-project/hadoop-yarn/hadoop-yarn-registry
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests:

                  org.apache.hadoop.yarn.applications.distributedshell.TestDistributedShell

                                      The test build failed in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests


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

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/5208//testReport/
Release audit warnings: https://builds.apache.org/job/PreCommit-YARN-Build/5208//artifact/patchprocess/patchReleaseAuditProblems.txt
Findbugs warnings: https://builds.apache.org/job/PreCommit-YARN-Build/5208//artifact/patchprocess/newPatchFindbugsWarningshadoop-yarn-registry.html
Javac warnings: https://builds.apache.org/job/PreCommit-YARN-Build/5208//artifact/patchprocess/diffJavacWarnings.txt
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/5208//console

This message is automatically generated.

> Add a way to register long-lived services in a YARN cluster
> -----------------------------------------------------------
>
>                 Key: YARN-913
>                 URL: https://issues.apache.org/jira/browse/YARN-913
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: api, resourcemanager
>    Affects Versions: 2.5.0, 2.4.1
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: 2014-09-03_Proposed_YARN_Service_Registry.pdf, 2014-09-08_YARN_Service_Registry.pdf,
RegistrationServiceDetails.txt, YARN-913-001.patch, YARN-913-002.patch, YARN-913-003.patch,
YARN-913-003.patch, YARN-913-004.patch, YARN-913-006.patch, YARN-913-007.patch, YARN-913-008.patch,
YARN-913-009.patch, YARN-913-010.patch, YARN-913-011.patch, YARN-913-012.patch, YARN-913-013.patch,
YARN-913-014.patch, YARN-913-015.patch, YARN-913-016.patch, yarnregistry.pdf, yarnregistry.tla
>
>
> In a YARN cluster you can't predict where services will come up -or on what ports. The
services need to work those things out as they come up and then publish them somewhere.
> Applications need to be able to find the service instance they are to bond to -and not
any others in the cluster.
> Some kind of service registry -in the RM, in ZK, could do this. If the RM held the write
access to the ZK nodes, it would be more secure than having apps register with ZK themselves.



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