## What changes were proposed in this pull request?
Hive using incorrect **InputFormat**(`org.apache.hadoop.mapred.SequenceFileInputFormat`) to read Spark's **Parquet** bucketed data source table.
Spark side:
```sql
spark-sql> CREATE TABLE t (c1 INT, c2 INT) USING parquet CLUSTERED BY (c1) SORTED BY (c1) INTO 2 BUCKETS;
2019-04-29 17:52:05 WARN HiveExternalCatalog:66 - Persisting bucketed data source table `default`.`t` into Hive metastore in Spark SQL specific format, which is NOT compatible with Hive.
spark-sql> DESC FORMATTED t;
c1 int NULL
c2 int NULL
# Detailed Table Information
Database default
Table t
Owner yumwang
Created Time Mon Apr 29 17:52:05 CST 2019
Last Access Thu Jan 01 08:00:00 CST 1970
Created By Spark 2.4.0
Type MANAGED
Provider parquet
Num Buckets 2
Bucket Columns [`c1`]
Sort Columns [`c1`]
Table Properties [transient_lastDdlTime=1556531525]
Location file:/user/hive/warehouse/t
Serde Library org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
InputFormat org.apache.hadoop.mapred.SequenceFileInputFormat
OutputFormat org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat
Storage Properties [serialization.format=1]
```
Hive side:
```sql
hive> DESC FORMATTED t;
OK
# col_name data_type comment
c1 int
c2 int
# Detailed Table Information
Database: default
Owner: root
CreateTime: Wed May 08 03:38:46 GMT-07:00 2019
LastAccessTime: UNKNOWN
Retention: 0
Location: file:/user/hive/warehouse/t
Table Type: MANAGED_TABLE
Table Parameters:
bucketing_version spark
spark.sql.create.version 3.0.0-SNAPSHOT
spark.sql.sources.provider parquet
spark.sql.sources.schema.bucketCol.0 c1
spark.sql.sources.schema.numBucketCols 1
spark.sql.sources.schema.numBuckets 2
spark.sql.sources.schema.numParts 1
spark.sql.sources.schema.numSortCols 1
spark.sql.sources.schema.part.0 {\"type\":\"struct\",\"fields\":[{\"name\":\"c1\",\"type\":\"integer\",\"nullable\":true,\"metadata\":{}},{\"name\":\"c2\",\"type\":\"integer\",\"nullable\":true,\"metadata\":{}}]}
spark.sql.sources.schema.sortCol.0 c1
transient_lastDdlTime 1557311926
# Storage Information
SerDe Library: org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe
InputFormat: org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormat
OutputFormat: org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat
Compressed: No
Num Buckets: -1
Bucket Columns: []
Sort Columns: []
Storage Desc Params:
path file:/user/hive/warehouse/t
serialization.format 1
```
So it's non-bucketed table at Hive side. This pr set the `SerDe` correctly so Hive can read these tables.
Related code:
33f3c48cac/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala (L976-L990)f9776e3892/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala (L444-L459)
## How was this patch tested?
unit tests
Closes#24486 from wangyum/SPARK-27592.
Authored-by: Yuming Wang <yumwang@ebay.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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