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[MAPREDUCE-7017] Too many times of meaningless invocation in TaskAttemptImpl#resolveHosts - MapReduce - [issue]
... MRAppMaster uses TaskAttemptImpl::resolveHosts to determine the dataLocalHosts for each task when the location of data split is IP, which will call a lot of times ( taskNum * dfsReplic...
http://issues.apache.org/jira/browse/MAPREDUCE-7017    Author: jiayuhan-it , 2018-01-12, 20:25