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https://issues.apache.org/jira/browse/KYLIN-3635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665130#comment-16665130
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jiatao.tao commented on KYLIN-3635:
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Hi Shaofeng, do you think we should provide a stronger constraint about this?
I've tried to make method reset() abstract so that the subclasses have to
implement this, but I found most of the implementation is still empty. What's
your opinion about this?
> Percentile calculation on Spark engine is wrong
> -----------------------------------------------
>
> Key: KYLIN-3635
> URL: https://issues.apache.org/jira/browse/KYLIN-3635
> Project: Kylin
> Issue Type: Bug
> Components: Spark Engine
> Affects Versions: v2.3.0, v2.3.1, v2.4.0, v2.3.2, v2.4.1, v2.5.0
> Reporter: Shaofeng SHI
> Assignee: Shaofeng SHI
> Priority: Major
> Fix For: v2.4.2, v2.5.1
>
>
> As titled; Received reporting that percentile result is wrong when using
> Spark engine. Checked the code and found the object was reused and not reset,
> the problem won't happen on normal MR as it would be serialized before next
> call, but would be a problem on Spark, as the object was cached in-memory and
> be serialized later.
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