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https://issues.apache.org/jira/browse/IMPALA-13376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Smith updated IMPALA-13376:
-----------------------------------
Description:
IMPALA-12548 fix behavior of AGG_MEM_CORRELATION_FACTOR. Higher value will
lower memory estimation, while lower value will result in higher memory
estimation. The documentation in
[ImpalaService.thrift|https://github.com/apache/impala/blob/874e4fa117bdccfb8784c1987e5e3bf1ef4fbc1d/common/thrift/ImpalaService.thrift#L850-L851],
however, says the opposite.
{code:java}
// Setting value 1.0 will result in an equal memory estimate as the default
estimation
// (no change). Defaults to 0.5. {code}
AGG_MEM_CORRELATION_FACTOR was also never documented.
was:
IMPALA-12548 fix behavior of AGG_MEM_CORRELATION_FACTOR. Higher value will
lower memory estimation, while lower value will result in higher memory
estimation. The documentation in
[ImpalaService.thrift|https://github.com/apache/impala/blob/874e4fa117bdccfb8784c1987e5e3bf1ef4fbc1d/common/thrift/ImpalaService.thrift#L850-L851],
however, says the opposite.
{code:java}
// Setting value 1.0 will result in an equal memory estimate as the default
estimation
// (no change). Defaults to 0.5. {code}
> Slight documentation mistake for AGG_MEM_CORRELATION_FACTOR
> -----------------------------------------------------------
>
> Key: IMPALA-13376
> URL: https://issues.apache.org/jira/browse/IMPALA-13376
> Project: IMPALA
> Issue Type: Documentation
> Components: Docs
> Affects Versions: Impala 4.4.0
> Reporter: Riza Suminto
> Assignee: Riza Suminto
> Priority: Major
> Fix For: Impala 4.5.0
>
>
> IMPALA-12548 fix behavior of AGG_MEM_CORRELATION_FACTOR. Higher value will
> lower memory estimation, while lower value will result in higher memory
> estimation. The documentation in
> [ImpalaService.thrift|https://github.com/apache/impala/blob/874e4fa117bdccfb8784c1987e5e3bf1ef4fbc1d/common/thrift/ImpalaService.thrift#L850-L851],
> however, says the opposite.
> {code:java}
> // Setting value 1.0 will result in an equal memory estimate as the default
> estimation
> // (no change). Defaults to 0.5. {code}
> AGG_MEM_CORRELATION_FACTOR was also never documented.
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