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public interface InputEstimator
Nested Class Summary | |
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static class |
InputEstimator.Estimation
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Method Summary | |
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InputEstimator.Estimation |
estimate(org.apache.hadoop.mapred.JobConf job,
TableScanOperator ts,
long remaining)
Estimate input size based on filter and projection on table scan operator |
Method Detail |
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InputEstimator.Estimation estimate(org.apache.hadoop.mapred.JobConf job, TableScanOperator ts, long remaining) throws HiveException
remaining
- Early exit condition. If it has positive value, further estimation
can be canceled on the point of exceeding it. In this case,
return any bigger length value then this (Long.MAX_VALUE, for eaxmple).
HiveException
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