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Ashu Pachauri commented on HBASE-18090: --------------------------------------- Pushed to master and branch-2. The patch for master, however, does not apply cleanly to branch-1. [~xinxin fan] Do you mind uploading the latest patch for branch-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: 3.0.0, 2.0.0-alpha-4 > > 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)