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[SPARK-6466][SQL] Remove unnecessary attributes when resolving GroupingSets - #5134

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viirya wants to merge 4 commits into

apache:masterfrom

viirya:remove_attr_expand

Closed

[SPARK-6466][SQL] Remove unnecessary attributes when resolving GroupingSets#5134
viirya wants to merge 4 commits into
apache:masterfrom
viirya:remove_attr_expand

Commits on Mar 23, 2015
- Only keep necessary attribute output.
  viirya
  committed
  8e16206
Commits on Mar 24, 2015
- Move it to Optimizer.
  viirya
  committed
  a2734b3
Commits on Apr 28, 2015
- Merge remote-tracking branch 'upstream/master' into remove_attr_expand
  viirya
  committed
  8faa8fa
- Add comment and unit test.
  viirya
  committed
  d5dadec