Leave it if I can't fix rather than removing

apache · Jan 30, 2017 · 90bf25b · 90bf25b
1 parent 7e6e521
commit 90bf25b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/internal/VariableSubstitution.scala b/sql/core/src/main/scala/org/apache/spark/sql/internal/VariableSubstitution.scala
@@ -20,7 +20,8 @@ package org.apache.spark.sql.internal
 import org.apache.spark.internal.config._
 
 /**
- * A helper class that enables substitution.
+ * A helper class that enables substitution using syntax like
+ * `${var}`, `${system:var}` and `${env:var}`.
  *
  * Variable substitution is controlled by `SQLConf.variableSubstituteEnabled`.
  */