[ https://issues.apache.org/jira/browse/MAPREDUCE-3710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Siddharth Seth updated MAPREDUCE-3710: -------------------------------------- Status: Patch Available (was: Open) > last split generated by FileInputFormat.getSplits may not have the best > locality > -------------------------------------------------------------------------------- > > Key: MAPREDUCE-3710 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-3710 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv1, mrv2 > Affects Versions: 1.0.0, 0.23.0 > Reporter: Siddharth Seth > Assignee: Siddharth Seth > Attachments: MR-3710_v1.txt > > > The last split generated by FileInputFormat.getSplits considers > {{blkLocations.length-1}} to be the hosts for the split. > The last split may be larger than the rest (SPLIT_SLOP=1.1 by default) - in > which case locality is picked up from a smaller block. > e.g. 1027MB file with a 128MB split size. The last split ends up being 131MB. > The hosts for locality end up being the nodes containing the 3MB block > instead of the 128MB block. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira