fix sampling bug in fractional bucket case
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Key: HADOOP-4336
URL: https://issues.apache.org/jira/browse/HADOOP-4336
Project: Hadoop Core
Issue Type: Bug
Components: contrib/hive
Affects Versions: 0.19.0
Reporter: Prasad Chakka
Assignee: Prasad Chakka
Priority: Minor
if there are 32 buckets and sampling clause is 1/64, no rows are selected.
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