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https://issues.apache.org/jira/browse/DRILL-7994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17482383#comment-17482383
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ASF GitHub Bot commented on DRILL-7994:
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jnturton edited a comment on pull request #2432:
URL: https://github.com/apache/drill/pull/2432#issuecomment-1022065612
@tdunning, that would be great thanks. Here the selectivity of a range
predicate on an integer column is estimated using a set of quantile estimates,
here termed an equidepth histogram (see
[NumericEquiDepthHistogram](https://github.com/apache/drill/blob/4aefcef2b665c5737471664912a26ef6ed9a6cfc/exec/java-exec/src/main/java/org/apache/drill/exec/planner/common/NumericEquiDepthHistogram.java)).
The quantile estimates are recovered from a MergingDigest over the integer
column that was created by an earlier `ANALYSE TABLE` command. If said
quantile estimates have shifted then that would explain what we're seeing...
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> Dependency version updates for severe vulnerabilities
> -----------------------------------------------------
>
> Key: DRILL-7994
> URL: https://issues.apache.org/jira/browse/DRILL-7994
> Project: Apache Drill
> Issue Type: Task
> Components: Security
> Affects Versions: 1.19.0
> Reporter: Charles Givre
> Assignee: James Turton
> Priority: Major
> Fix For: 1.20.0
>
> Attachments: dependency-check-report.html
>
>
> Dependency updates based on severe vulnerabilities reported by the OWASP
> dependency check.
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