yx91490 created IMPALA-11504:
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Summary: Speed up Decimal16Value division by specializing
DecimalUtil::GetScaleMultiplier<int256_t>()
Key: IMPALA-11504
URL: https://issues.apache.org/jira/browse/IMPALA-11504
Project: IMPALA
Issue Type: Improvement
Reporter: yx91490
Assignee: yx91490
There exists a call chain:
{code:java}
DecimalValue<int128_t>::Divide() ->
DecimalUtil::MultiplyByScale<int256_t>() ->
DecimalUtil::GetScaleMultiplier(){code}
but decimal-util.h didn't specialize
DecimalUtil::GetScaleMultiplier<int256_t>(), causing more performance loss.
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