[jira] [Created] (PHOENIX-2565) Store data for immutable tables in single KeyValue

["James Taylor (JIRA)" <ji...@apache.org>]

James Taylor created PHOENIX-2565:
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             Summary: Store data for immutable tables in single KeyValue
                 Key: PHOENIX-2565
                 URL: https://issues.apache.org/jira/browse/PHOENIX-2565
             Project: Phoenix
          Issue Type: Improvement
            Reporter: James Taylor


Since an immutable table (i.e. declared with IMMUTABLE_ROWS=true) will never update a column value, it'd be more efficient to store all column values for a row in a single KeyValue. We could use the existing format we have for variable length arrays.

For backward compatibility, we'd need to support the current mechanism. Also, you'd no longer be allowed to transition an existing table to/from being immutable. I think the best approach would be to introduce a new IMMUTABLE keyword and use it like this:
{code}
CREATE IMMUTABLE TABLE ...
{code}



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