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https://issues.apache.org/jira/browse/HIVE-23095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17076480#comment-17076480
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Prasanth Jayachandran commented on HIVE-23095:
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I think fastutil was deliberately not included in the past as it is 18+MB jar.
Can you use Map<Integer,Byte> instead?
Also can you also include merge() performance to JMH as it is also in the
critical hot path?
> NDV might be overestimated for a table with ~70 value
> -----------------------------------------------------
>
> Key: HIVE-23095
> URL: https://issues.apache.org/jira/browse/HIVE-23095
> Project: Hive
> Issue Type: Bug
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-23095.01.patch, HIVE-23095.02.patch,
> HIVE-23095.03.patch, HIVE-23095.04.patch, HIVE-23095.04.patch,
> HIVE-23095.04.patch, HIVE-23095.05.patch, hll-bench.md
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> uncovered during looking into HIVE-23082
> https://issues.apache.org/jira/browse/HIVE-23082?focusedCommentId=17067773&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17067773
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