gatorsmile effca9868e [SPARK-22720][SS] Make EventTimeWatermark Extend UnaryNode ... ## What changes were proposed in this pull request? Our Analyzer and Optimizer have multiple rules for `UnaryNode`. After making `EventTimeWatermark` extend `UnaryNode`, we do not need a special handling for `EventTimeWatermark`. ## How was this patch tested? The existing tests Author: gatorsmile <gatorsmile@gmail.com> Closes #19913 from gatorsmile/eventtimewatermark.		2017-12-06 13:11:38 -08:00
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main	[SPARK-22720][SS] Make EventTimeWatermark Extend UnaryNode	2017-12-06 13:11:38 -08:00
test	[SPARK-22695][SQL] ScalaUDF should not use global variables	2017-12-07 00:50:49 +08:00