forcedotcom/phoenix — pull request #482 by maryannxue (2013-10-16 19:27:09+00:00)
Title: Issue #20 - hashjoin implementation improvements

Use KeyValueSchema for joined results:

1) for join tables that will be built as hash:
project all required columns into a schema.
2) for the join table against which the final scan will be performed:
retain those row key columns in the rowkey, and project the rest of all required columns into a schema.