HeartSaVioR commented on a change in pull request #23609: [SPARK-26379][SS] Fix
issue on adding current_timestamp/current_date to streaming query
URL: https://github.com/apache/spark/pull/23609#discussion_r249677648
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/MicroBatchExecution.scala
##########
@@ -508,12 +508,21 @@ class MicroBatchExecution(
cd.dataType, cd.timeZoneId)
}
+ // Pre-resolve new attributes to ensure all attributes are resolved before
+ // accessing schema of logical plan. Note that it only leverages the
information
+ // of attributes, so we don't need to concern about the value of literals.
+
+ val newAttrPlanPreResolvedForSchema = newAttributePlan
transformAllExpressions {
Review comment:
We can even leverage `newBatchesPlan` and remove this: this effort is to
ensure going through the same path with further transformation when extracting
schema.
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