Github user JamesRTaylor commented on the pull request:
https://github.com/apache/incubator-phoenix/pull/8#issuecomment-35470690
We don't have any special cases for comparison of arrays. If we allow an
array to be part of the row key (or allow an array to be part of a secondary
index which amounts to the same thing), then we're at the mercy of HBase in
terms of how it orders rows. The order of rows needs to match the natural sort
order of the values.
In your serialization format, for arrays with non fixed width types, add a
null byte after the last value so that the sort order works out as it should.
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