James Taylor created PHOENIX-4596:
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Summary: 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: Sub-task
Reporter: James Taylor
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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