[ https://issues.apache.org/jira/browse/HBASE-4914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nicolas Spiegelberg updated HBASE-4914: --------------------------------------- Description: Current TableInputFormat based MR jobs create exactly one mapper per region where each mapper sets one Scan with appropriate start/stop row keys. This change allows jobs to be run with any number of mappers per region, so that when a mapper fails, there will be less data to be reprocessed. Priority: Minor (was: Major) Summary: Enhance MapReduce TableInputFormat to Support N-mappers per Region (was: Support N-mappers per Region) Need to port from 89-fb. See SVN #1181607 > Enhance MapReduce TableInputFormat to Support N-mappers per Region > ------------------------------------------------------------------ > > Key: HBASE-4914 > URL: https://issues.apache.org/jira/browse/HBASE-4914 > Project: HBase > Issue Type: Sub-task > Components: client, regionserver > Reporter: Nicolas Spiegelberg > Priority: Minor > Fix For: 0.94.0 > > > Current TableInputFormat based MR jobs create exactly one mapper per region > where each mapper sets one Scan with appropriate start/stop row keys. This > change allows jobs to be run with any number of mappers per region, so that > when a mapper fails, there will be less data to be reprocessed. -- 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