[ https://issues.apache.org/jira/browse/MAPREDUCE-7033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Lowe updated MAPREDUCE-7033: ---------------------------------- Attachment: MAPREDUCE-7033.001.patch > Map outputs implicitly rely on permissive umask for shuffle > ----------------------------------------------------------- > > Key: MAPREDUCE-7033 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-7033 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv2 > Reporter: Jason Lowe > Assignee: Jason Lowe > Priority: Critical > Attachments: MAPREDUCE-7033.001.patch > > > Map tasks do not explicitly set the permissions of their output files for > shuffle. In a secure cluster the shuffle service is running as a different > user than the map task, so the output files require group readability in > order to serve up the data during the shuffle phase. If the user's UNIX > umask is too restrictive (e.g.: 077) then the map task's file.out and > file.out.index permissions can be too restrictive to allow the shuffle > handler to access them. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: mapreduce-issues-h...@hadoop.apache.org