[
https://issues.apache.org/jira/browse/BIGTOP-857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13601476#comment-13601476
]
Aaron T. Myers commented on BIGTOP-857:
---------------------------------------
By default I believe BigTop configures the Unix domain socket for HDFS short
circuit reads under /var/run/hadoop-hdfs. When a DN starts up with short
circuit read enabled, one of the things it does is verify the security of the
local file system path where the domain socket will be created. The DN will
error out if any component along that path is group-writable unless the group
ownership is 'root'. I believe the group ownership of /var/run/hadoop-hdfs is
either 'hadoop' or 'hdfs' in BigTop, and thus this directory must not be
group-writable in order for short circuit local read to work properly.
> Inconsistent group ownership of /var/run/hadoop-hdfs between .deb and .rpm
> installs
> -----------------------------------------------------------------------------------
>
> Key: BIGTOP-857
> URL: https://issues.apache.org/jira/browse/BIGTOP-857
> Project: Bigtop
> Issue Type: Bug
> Reporter: Sean Mackrory
> Assignee: Sean Mackrory
> Attachments: BIGTOP-857.patch
>
>
> Several /var/{run,lib,log}/hadoop-* directories have 755 permissions on
> Debian but 775 permission on Red Hat. Probably innocuous, but inconsistent.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
