[SPARK-5852][SQL]Fail to convert a newly created empty metastore parquet table to a data source parquet table. #4655
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…uet table to a data source parquet table. The problem is that after we create an empty hive metastore parquet table (e.g. `CREATE TABLE test (a int) STORED AS PARQUET`), Hive will create an empty dir for us, which cause our data source `ParquetRelation2` fail to get the schema of the table. See JIRA for the case to reproduce the bug and the exception. This PR is based on #4562 from chenghao-intel. JIRA: https://issues.apache.org/jira/browse/SPARK-5852 Author: Yin Huai <yhuai@databricks.com> Author: Cheng Hao <hao.cheng@intel.com> Closes #4655 from yhuai/CTASParquet and squashes the following commits: b8b3450 [Yin Huai] Update tests. 2ac94f7 [Yin Huai] Update tests. 3db3d20 [Yin Huai] Minor update. d7e2308 [Yin Huai] Revert changes in HiveMetastoreCatalog.scala. 36978d1 [Cheng Hao] Update the code as feedback a04930b [Cheng Hao] fix bug of scan an empty parquet based table 442ffe0 [Cheng Hao] passdown the schema for Parquet File in HiveContext (cherry picked from commit 117121a) Signed-off-by: Michael Armbrust <michael@databricks.com>
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The problem is that after we create an empty hive metastore parquet table (e.g.
CREATE TABLE test (a int) STORED AS PARQUET), Hive will create an empty dir for us, which cause our data sourceParquetRelation2fail to get the schema of the table. See JIRA for the case to reproduce the bug and the exception.This PR is based on #4562 from @chenghao-intel.
JIRA: https://issues.apache.org/jira/browse/SPARK-5852