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https://issues.apache.org/jira/browse/PHOENIX-4596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Taylor updated PHOENIX-4596:
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Issue Type: Bug (was: Sub-task)
Parent: (was: PHOENIX-4550)
> Add SINGLE_CELL_PER_LEVEL to ensure denseness with hierarchies of views
> -----------------------------------------------------------------------
>
> Key: PHOENIX-4596
> URL: https://issues.apache.org/jira/browse/PHOENIX-4596
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
> Priority: Major
>
> Currently we store the col qualifier counter at the physical table level. If
> we stored it at the view level then the array would be dense. We didn't do
> this initially because we wouldn't be able to handle adding a new column to
> the base table (unless we preallocated a fixed number of columns and started
> the view counters at this number).
> We could solve this issue if we stored column values for each level of the
> hierarchy in its own cell. The base table column values would be stored in a
> single cell. Views would store their columns in a separate cell, grand
> child-views in their own cell and so on.
> We could also do this only when a column is added to the base table (or a
> view), then store that column value (and any further columns that are added)
> in its own cell. We start the column qualifier counter at each level at the
> number of cols in the parent +1.
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