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https://issues.apache.org/jira/browse/IMPALA-6320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-6320.
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Resolution: Later
> It may be possible to speed up decimal comparison by counting leading zeros
> in the underlying data type
> -------------------------------------------------------------------------------------------------------
>
> Key: IMPALA-6320
> URL: https://issues.apache.org/jira/browse/IMPALA-6320
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 2.11.0
> Reporter: Taras Bobrovytsky
> Priority: Major
>
> Decimal comparison may be slower than it needs to be because we are using
> larger datatypes than we need all the time. We should investigate if it's
> possible to speed up decimal comparison by first checking if the larger data
> type is needed by counting leading zeros.
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