[ https://issues.apache.org/jira/browse/HBASE-18090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-18090: -------------------------- Fix Version/s: (was: 2.0.0-alpha-4) (was: 3.0.0) 2.0.0-beta-1 > Improve TableSnapshotInputFormat to allow more multiple mappers per region > -------------------------------------------------------------------------- > > Key: HBASE-18090 > URL: https://issues.apache.org/jira/browse/HBASE-18090 > Project: HBase > Issue Type: Improvement > Components: mapreduce > Affects Versions: 3.0.0 > Reporter: Mikhail Antonov > Assignee: xinxin fan > Fix For: 2.0.0-beta-1 > > Attachments: HBASE-18090-branch-1.3-v1.patch, > HBASE-18090-branch-1.3-v2.patch, HBASE-18090-V3-master.patch, > HBASE-18090-V4-master.patch, HBASE-18090-V5-master.patch > > > TableSnapshotInputFormat runs one map task per region in the table snapshot. > This places unnecessary restriction that the region layout of the original > table needs to take the processing resources available to MR job into > consideration. Allowing to run multiple mappers per region (assuming > reasonably even key distribution) would be useful. -- This message was sent by Atlassian JIRA (v6.4.14#64029)