Github user cxzl25 commented on the issue:
https://github.com/apache/spark/pull/20406
ping @gatorsmile @dongjoon-hyun
```
set hive.default.fileformat=orc;
create table tbl stored as textfile
as
select 1
```
It failed because it used the wrong SERDE
```
Caused by: java.lang.ClassCastException:
org.apache.hadoop.hive.ql.io.orc.OrcSerde$OrcSerdeRow cannot be cast to
org.apache.hadoop.io.BytesWritable
at
org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat$1.write(HiveIgnoreKeyTextOutputFormat.java:91)
at
org.apache.spark.sql.hive.execution.HiveOutputWriter.write(HiveFileFormat.scala:149)
at
org.apache.spark.sql.execution.datasources.FileFormatWriter$SingleDirectoryWriteTask.execute(FileFormatWriter.scala:327)
at
org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask$3.apply(FileFormatWriter.scala:258)
at
org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask$3.apply(FileFormatWriter.scala:256)
at
org.apache.spark.util.Utils$.tryWithSafeFinallyAndFailureCallbacks(Utils.scala:1375)
at
org.apache.spark.sql.execution.datasources.FileFormatWriter$.org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask(FileFormatWriter.scala:261)
... 16 more
```
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