dongjoon-hyun commented on a change in pull request #28761:
URL: https://github.com/apache/spark/pull/28761#discussion_r466632459
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcFiltersBase.scala
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@@ -37,12 +40,44 @@ trait OrcFiltersBase {
}
/**
- * Return true if this is a searchable type in ORC.
- * Both CharType and VarcharType are cleaned at AstBuilder.
+ * This method returns a map which contains ORC field name and data type.
Each key
+ * represents a column; `dots` are used as separators for nested columns. If
any part
+ * of the names contains `dots`, it is quoted to avoid confusion. See
+ * `org.apache.spark.sql.connector.catalog.quote` for implementation details.
Review comment:
`quote` -> `quoted`.
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