Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/4930#discussion_r26808679
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/test/TestHive.scala ---
@@ -151,7 +152,15 @@ class TestHiveContext(sc: SparkContext) extends
HiveContext(sc) {
val describedTable = "DESCRIBE (\\w+)".r
+ val vs = new VariableSubstitution()
+
protected[hive] class HiveQLQueryExecution(hql: String)
+ extends this.SubstitutedHiveQLQueryExecution(vs.substitute(hiveconf,
hql))
+
+ // we should substitute variables in hql to pass the text to parseSql()
as a parameter.
+ // Hive parser need substituted text. HiveContext.sql() does this but
return a DataFrame,
+ // while we need a logicalPlan so we cannot reuse that.
+ protected[hive] class SubstitutedHiveQLQueryExecution(hql: String)
extends this.QueryExecution(HiveQl.parseSql(hql)) {
def hiveExec() = runSqlHive(hql)
--- End diff --
Seems eventually `Driver.run` will call `Driver.compile`, which will the
the substitution?
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