[GitHub] spark pull request #21389: [SPARK-24204][SQL] Verify a schema in Json/Orc/Pa...

[gatorsmile <gi...@git.apache.org>]

Github user gatorsmile commented on a diff in the pull request:

    https://github.com/apache/spark/pull/21389#discussion_r195472992
  
    --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceUtils.scala ---
    @@ -0,0 +1,61 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one or more
    + * contributor license agreements.  See the NOTICE file distributed with
    + * this work for additional information regarding copyright ownership.
    + * The ASF licenses this file to You under the Apache License, Version 2.0
    + * (the "License"); you may not use this file except in compliance with
    + * the License.  You may obtain a copy of the License at
    + *
    + *    http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.spark.sql.execution.datasources
    +
    +import org.apache.spark.sql.execution.datasources.csv.CSVFileFormat
    +import org.apache.spark.sql.execution.datasources.json.JsonFileFormat
    +import org.apache.spark.sql.types._
    +
    +
    +object DataSourceUtils {
    +
    +  /**
    +   * Verify if the schema is supported in datasource.
    --- End diff --
    
    Please improve the description? and document which built-in file formats are covered by this function. Also document which data types are not supported for each data source? 


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