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https://issues.apache.org/jira/browse/PHOENIX-4916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16642183#comment-16642183
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Karan Mehta commented on PHOENIX-4916:
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[~Bin Shi] I don't see that happening from the code. Can you add an example or
IT?
> When collecting statistics, the estimated size of a guide post may only count
> part of cells of the last row
> -----------------------------------------------------------------------------------------------------------
>
> Key: PHOENIX-4916
> URL: https://issues.apache.org/jira/browse/PHOENIX-4916
> Project: Phoenix
> Issue Type: Bug
> Reporter: Bin Shi
> Assignee: Bin Shi
> Priority: Major
>
> In DefaultStatisticsCollector.collectStatistics(...), it iterates all cells
> of the current row, once the accumulated estimated size plus the size of the
> current cell >= guide post width, it skips all the remaining cells. The
> result is that the estimated size of a guide post may only count part of
> cells of the last row.
> This problem can be ignored in clusters with real data where the guide post
> width is much bigger than the row size, but it does have impact on unit test
> and integration test, because we use very small guide post width in the test
> which results in inaccuracy of the estimated size of the query.
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