Jason Lowe created MAPREDUCE-5027: ------------------------------------- Summary: Shuffle does not limit number of outstanding connections Key: MAPREDUCE-5027 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5027 Project: Hadoop Map/Reduce Issue Type: Bug Affects Versions: 0.23.5, 2.0.3-alpha Reporter: Jason Lowe
The ShuffleHandler does not have any configurable limits to the number of outstanding connections allowed. Therefore a node with many map outputs and many reducers in the cluster trying to fetch those outputs can exhaust a nodemanager out of file descriptors. -- 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