liubin101 opened a new pull request, #6381: URL: https://github.com/apache/hadoop/pull/6381
### Description of PR When maps and reduces run simultaneously, if resources are insufficient, reduces will be preempted. Because the priority of reduce is higher than map, the preempted reduces will first obtain resources when rerun, and then be preempted again, falling into a loop. We need to configure the priority of map higher than reduce to avoid this situation. ### How was this patch tested? unit test -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
