[jira] [Commented] (AMBARI-24981) JournalNode may fail to start due to unreadable config file

["Hudson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMBARI-24981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16760935#comment-16760935 ] 

Hudson commented on AMBARI-24981:
---------------------------------

SUCCESS: Integrated in Jenkins build Ambari-trunk-Commit #10452 (See [https://builds.apache.org/job/Ambari-trunk-Commit/10452/])
AMBARI-24981. JournalNode may fail to start due to unreadable config (github: [https://gitbox.apache.org/repos/asf?p=ambari.git&a=commit&h=8613d58c347cc21961726811ac8d7bf43389ee6f])
* (edit) ambari-common/src/main/python/resource_management/core/sudo.py
* (edit) ambari-agent/src/test/python/resource_management/TestPropertiesFileResource.py
* (edit) ambari-common/src/main/python/ambari_commons/os_utils.py
* (edit) ambari-agent/src/test/python/resource_management/TestXmlConfigResource.py
* (edit) ambari-agent/src/test/python/resource_management/TestContentSources.py
* (edit) ambari-agent/src/test/python/resource_management/TestRepositoryResource.py
* (edit) ambari-common/src/main/python/resource_management/core/providers/system.py
* (edit) ambari-common/src/main/python/resource_management/libraries/providers/repository.py
* (edit) ambari-agent/src/test/python/resource_management/TestFileResource.py


> JournalNode may fail to start due to unreadable config file
> -----------------------------------------------------------
>
>                 Key: AMBARI-24981
>                 URL: https://issues.apache.org/jira/browse/AMBARI-24981
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-agent
>            Reporter: Doroszlai, Attila
>            Assignee: Doroszlai, Attila
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.8.0
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> During startup, JournalNode reads config files that belong to YARN, not HDFS (eg. {{yarn-site.xml}}), if they are present in the Hadoop config dir.
> Ambari's {{File()}} provider creates files at the final location, then sets metadata (ownership and permissions).  This makes the file visible to other processes with possibly the wrong metadata.
> If agent-side parallel execution is enabled, JournalNode may be started concurrently with some YARN component.  JournalNode may encounter a config file that it cannot read, because the file's permissions and owner are still 640 and root, respectively, which causes it to shutdown:
> {noformat}
> ERROR conf.Configuration (Configuration.java:loadResource(2999)) - error parsing conf yarn-site.xml
> java.io.FileNotFoundException: /etc/hadoop/conf/yarn-site.xml (Permission denied)
> {noformat}



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