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https://issues.apache.org/jira/browse/PHOENIX-3442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15706071#comment-15706071
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James Taylor commented on PHOENIX-3442:
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Also, can we add some unit tests (similar to
ArrayAppendFunctionTest.testArrayAppendFunction3) that test the edge cases of a
single key value column transitioning from storing offsets as a short to offets
as an int?
> Support null when columns have default values for immutable tables with
> encoding scheme COLUMNS_STORED_IN_SINGLE_CELL
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: PHOENIX-3442
> URL: https://issues.apache.org/jira/browse/PHOENIX-3442
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Samarth Jain
> Assignee: Thomas D'Silva
> Attachments: PHOENIX-3442.patch
>
>
> Comments from [~jamestaylor]:
> The way we differentiate a null value now is by the value being an empty byte
> array (explicitly set to null) versus not being present (in which case we use
> the default value).
> This is encapsulated in the DefaultValueExpression.
> We'll need to tweak our encoding for this.
> One way would be to use a negative number for the offset.
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