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https://issues.apache.org/jira/browse/YARN-1253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13783335#comment-13783335
]
Hadoop QA commented on YARN-1253:
---------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12606170/YARN-1253.patch.txt
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 3 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}. 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:green}+1 core tests{color}. The patch passed unit tests in
hadoop-common-project/hadoop-common
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-YARN-Build/2057//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/2057//console
This message is automatically generated.
> Changes to LinuxContainerExecutor to run containers as a single dedicated
> user in non-secure mode
> -------------------------------------------------------------------------------------------------
>
> Key: YARN-1253
> URL: https://issues.apache.org/jira/browse/YARN-1253
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: nodemanager
> Affects Versions: 2.1.0-beta
> Reporter: Alejandro Abdelnur
> Assignee: Roman Shaposhnik
> Priority: Blocker
> Attachments: YARN-1253.patch.txt
>
>
> When using cgroups we require LCE to be configured in the cluster to start
> containers.
> When LCE starts containers as the user that submitted the job. While this
> works correctly in a secure setup, in an un-secure setup this presents a
> couple issues:
> * LCE requires all Hadoop users submitting jobs to be Unix users in all nodes
> * Because users can impersonate other users, any user would have access to
> any local file of other users
> Particularly, the second issue is not desirable as a user could get access to
> ssh keys of other users in the nodes or if there are NFS mounts, get to other
> users data outside of the cluster.
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