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https://issues.apache.org/jira/browse/ARROW-9263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17147608#comment-17147608
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Antoine Pitrou commented on ARROW-9263:
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Then we should probably bump the probability to 0.1% as well.
> [C++] Benchmark: promote RegressionSetArgs size to L2
> -----------------------------------------------------
>
> Key: ARROW-9263
> URL: https://issues.apache.org/jira/browse/ARROW-9263
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Frank Du
> Assignee: Frank Du
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> The 0.01% null probability on L1 size(usually 32k) generate all true values
> for double/float type.
> Large the size that it can produce the wanted 0.01% null data.
>
> const int64_t array_size = args.size / sizeof(CType);
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