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https://issues.apache.org/jira/browse/HIVE-22587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pablo Junge updated HIVE-22587:
-------------------------------
Attachment: HIVE-22587.patch
Status: Patch Available (was: Open)
Changed definition of HIVE_STATS_NDV_ERROR
HIVE_STATS_NDV_ERROR("hive.stats.ndv.error", (float)20.0,
"The standard error allowed for NDV estimates, expressed in percentage. This
provides a tradeoff \n" +
"between accuracy and compute cost. A lower value for the error indicates
higher accuracy and a \n" +
"higher compute cost. (NDV means the number of distinct values.). It only
affects the FM-Sketch \n" +
"(not the HLL algorithm which is the default), where it computes the number of
necessary\n" +
" bitvectors to achieve the accuracy.")
> hive.stats.ndv.error parameter documentation issue in HiveConf.java
> -------------------------------------------------------------------
>
> Key: HIVE-22587
> URL: https://issues.apache.org/jira/browse/HIVE-22587
> Project: Hive
> Issue Type: Improvement
> Components: Hive
> Reporter: Pablo Junge
> Assignee: Pablo Junge
> Priority: Minor
> Attachments: HIVE-22587.patch
>
>
> hive.stats.ndv.error parameter documentation should specify that it only
> affects the FM-Sketch algorithm
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