Junegunn Choi created HBASE-29699:
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             Summary: Scan#setLimit ignored in MapReduce jobs
                 Key: HBASE-29699
                 URL: https://issues.apache.org/jira/browse/HBASE-29699
             Project: HBase
          Issue Type: Bug
          Components: mapreduce
            Reporter: Junegunn Choi


h2. Problem

{{TableInputFormat}} and {{TableSnapshotInputFormat}} do not respect 
non-default {{limit}} values set on a Scan object.

h2. Cause

There are two underlying issues:

1. {{ProtobufUtil.toScan}} does not serialize/deserialize the {{limit}} value.
2. {{TableSnapshotInputFormatImpl.RecordReader}} does not apply the {{limit}} 
when reading rows.




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