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https://issues.apache.org/jira/browse/HBASE-9283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick Dimiduk updated HBASE-9283:
--------------------------------

    Fix Version/s: 0.95.3
                   0.96.0
    
> Struct and StructIterator should properly handle trailing nulls
> ---------------------------------------------------------------
>
>                 Key: HBASE-9283
>                 URL: https://issues.apache.org/jira/browse/HBASE-9283
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.95.2
>            Reporter: Nick Dimiduk
>             Fix For: 0.96.0, 0.95.3
>
>
> For a composite row key, Phoenix strips off trailing null columns values in 
> the row key. The reason this is important is that then new nullable row key 
> columns can be added to a schema without requiring any data upgrade to 
> existing rows. Otherwise, adding new row key columns to the end of a schema 
> becomes extremely cumbersome, as you'd need to delete all existing rows and 
> add them back with a row key that includes a null value.
> Rather than Phoenix needing to modify the iteration code everywhere (as 
> [~ndimiduk] outlined here: 
> https://issues.apache.org/jira/browse/HBASE-8693?focusedCommentId=13744499&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13744499),
>  it'd be better if StructIterator handled this out-of-the-box. Otherwise, if 
> Phoenix has to specialize this, we'd lose the interop piece which is the 
> justification for switching our type system to this new one in the first 
> place.

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