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[SPARK-15515][SQL] Error Handling in Running SQL Directly On Files
#### What changes were proposed in this pull request? This PR is to address the following issues: - **ISSUE 1:** For ORC source format, we are reporting the strange error message when we did not enable Hive support: ```SQL SQL Example: select id from `org.apache.spark.sql.hive.orc`.`file_path` Error Message: Table or view not found: `org.apache.spark.sql.hive.orc`.`file_path` ``` Instead, we should issue the error message like: ``` Expected Error Message: The ORC data source must be used with Hive support enabled ``` - **ISSUE 2:** For the Avro format, we report the strange error message like: The example query is like ```SQL SQL Example: select id from `avro`.`file_path` select id from `com.databricks.spark.avro`.`file_path` Error Message: Table or view not found: `com.databricks.spark.avro`.`file_path` ``` The desired message should be like: ``` Expected Error Message: Failed to find data source: avro. Please use Spark package http://spark-packages.org/package/databricks/spark-avro" ``` - ~~**ISSUE 3:** Unable to detect incompatibility libraries for Spark 2.0 in Data Source Resolution. We report a strange error message:~~ **Update**: The latest code changes contains - For JDBC format, we added an extra checking in the rule `ResolveRelations` of `Analyzer`. Without the PR, Spark will return the error message like: `Option 'url' not specified`. Now, we are reporting `Unsupported data source type for direct query on files: jdbc` - Make data source format name case incensitive so that error handling behaves consistent with the normal cases. - Added the test cases for all the supported formats. #### How was this patch tested? Added test cases to cover all the above issues Author: gatorsmile <gatorsmile@gmail.com> Author: xiaoli <lixiao1983@gmail.com> Author: Xiao Li <xiaoli@Xiaos-MacBook-Pro.local> Closes #13283 from gatorsmile/runSQLAgainstFile.
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