Mikhail Antonov created HBASE-18090:
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Summary: 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: 1.4.0
Reporter: Mikhail Antonov
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.
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