[performance] Unkey table before collectAsDict #5860
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This is used in lowering `MatrixAnnotateColsTable`, and will allow us to optimize away unnecessary keying shuffles that happen in column annotation table manipulations.
patrick-schultz
approved these changes
Apr 11, 2019
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This is used in lowering
MatrixAnnotateColsTable, and will allowus to optimize away unnecessary keying shuffles that happen in column
annotation table manipulations.