Shubham Roy created HBASE-29811:
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Summary: Introduce capping of input splits based on provided
config value for MR jobs on live tables.
Key: HBASE-29811
URL: https://issues.apache.org/jira/browse/HBASE-29811
Project: HBase
Issue Type: New Feature
Components: mapreduce
Affects Versions: 2.5.13, 2.6.4, 3.0.0
Reporter: Shubham Roy
Assignee: Shubham Roy
For merging input splits, we need a config parameter to set the number of
mappers we want, say M. Then if we have N input splits, we will merge
ceiling(N/M) consecutive splits. Let s be the start key of the first split in
the merge list and e is the end key of the last split. Then the result of the
merge will be one splits [s, e].
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